1991
June
The Dursleys go to the zoo for Dudley's 11th birthday. Harry is usually sent away to spend the day with Mrs. Figg, but this year she has broken her leg so the Dursleys have to bring him along. At the zoo, Harry has a conversation with a Brazilian Boa Constrictor. The glass disappears and the snake escapes. Harry is punished for a month.
Voldemort takes over the body of Professor Quirrell.
July 24
Harry receives a letter from Hogwarts, but Uncle Vernon snatches it away before he can read it. Harry moves into Dudley's second bedroom.
July 25
Harry receives another letter which is again destroyed by Vernon.
July 26
Uncle Vernon spends the night on the doorstep. Harry receives three letters that Vernon destroys.
July 27
Twelve letters are delivered for Harry. Vernon seals up the house.
July 28
Twenty-four letters are delivered for Harry, hidden inside the two-dozen eggs brought by the milkman.
July 29
Letters are delivered through the chimney, prompting Uncle Vernon to relocate the family to a hotel.
July 30
Over a hundred letters arrive at the hotel for Harry. Vernon drags the family to an abandoned shack on a small island.
July 31
Harry turns eleven. Hagrid shows up with a birthday feast for Harry and hand delivers his acceptance notice from Hogwarts. He takes Harry to Diagon Alley to buy his school supplies, where Harry meets Draco Malfoy at Madam Malkin's. Hagrid removes the Sorcerer's Stone from Gringott's, and later in the day the same vault is broken into by Professor Quirrell. The Sorcerer's Stone is brought to Hogwarts and a security system set up, including spells from each professor and a three-headed dog named "Fluffy."
September 1
Harry arrives at King's Cross Station and boards the Hogwarts Express at platform nine and three-quarters. He meets the Weasleys, Hermione Granger, and Neville Longbottom on board. The Sorting Hat places Harry, Ron, Hermione, and Neville into Gryffindor and Draco Malfoy into Slytherin.
The Sorting Hat also places Dean Thomas, Seamus Finnigan, Parvati Patil, and Lavender Brown into Gryffindor. Padma Patil is sent to Ravenclaw.
September 2
Classes begin at Hogwarts.
September 6
Harry has his first Potions class with Professor Snape, who scolds Harry several times for no reason. Harry and Ron have tea with Hagrid.
September 12
Flying lessons begin for Gryffindor and Slytherin first-years. Neville Longbottom breaks his arm. Malfoy steals Neville's Remembrall and Harry chases after him on a broomstick. Harry lands a place on Gryffindor's Quidditch team.
Malfoy challenges Harry to a midnight duel but never shows. Harry, Ron, Hermione, and Neville stumble across Fluffy while hiding from caretaker Filch.
September 13
Harry gets his new broomstick, a Nimbus Two Thousand. Wood teaches him how to play and Harry begins practice three nights a week.
October 31
Professor Flitwick's first-year Charms class begins object levitation lessons. Ron makes some nasty comments about Hermione that send her crying into the bathroom. A twelve-foot mountain troll finds its way into the castle and into the same bathroom as Hermione, prompting Harry and Ron to save her.
November 8
Snape confiscates Harry's copy of Quidditch Through the Ages. When Harry tries to reclaim it, Snape is bandaging his leg, and yells at Harry to get out.
November 9
Harry plays his first Quidditch match. His broomstick goes out of control, Ron and Hermione blame Snape. Harry still manages to capture the Golden Snitch by almost swallowing it.
December
Harry, Ron, and Hermione begin doing research to find out who Nicholas Flamel is. Hogwarts is dismissed for the winter holidays, Harry and the Weasleys stay behind.
December 25
Harry opens his Christmas presents, which include an invisibility cloak that once belonged to his father. After the holiday feast, he sneaks out of his room to do research in the restricted section of the library. The first book he opens begins to scream, alerting Filch, and Harry escapes into an empty classroom. Inside he discovers the Mirror of Erised, which shows Harry his entire family.
December 26
Harry brings Ron to look at the mirror, in which Ron sees himself as Head Boy and Quidditch Captain.
December 27
Harry returns to view the mirror once more, but is confronted by Professor Dumbledore, who reveals the true nature of the mirror to Harry.
1992
February-March
Harry figures out who Nicholas Flamel is by looking at the back of a Chocolate Frog card. Gryffindor plays a Quidditch match against Hufflepuff, which Snape referees. Ron and Neville fight with the Slytherins in the stands, while Harry captures the Snitch and wins the game. Harry overhears Snape confronting Quirrell in the woods.
April
The students get a lot of homework over the Easter holiday. Hagrid wins a dragon egg in a a game of cards, and accidentally reveals how to get past Fluffy. The egg hatches, and Hagrid names him Norbert. Harry decides they should send Norbert to Ron's brother Charlie, and arrangements are made for some of Charlie's friends to take the dragon. Norbert is taken away without incident, but Filch catches Harry and Hermione out after curfew. One hundred-fifty points are taken from Gryffindor.
May
Harry, Hermione, Neville, and Malfoy have detention with Hagrid. They head into the Forbidden Forest to search for an injured unicorn. Harry finds the injured unicorn and the creature that killed it, but his scar begins to hurt, crippling him. A centaur named Firenze finds Harry and brings him back to Hagrid, explaining the dark purpose for killing the unicorn. Harry realizes that the creature was Voldemort.
June
Exams begin. Harry finds it hard to study due to worries about Voldemort. They try to warn Dumbledore about Voldemort and the Sorcerer's Stone, but the Headmaster is away and Professor McGonagall doesn't believe them. Harry decides to try and get the Stone first, accompanied by Ron and Hermione. They manage to bypass all the traps and puzzles, though Ron is knocked out by a giant chess piece. Hermione is forced to go back to warn Dumbledore. Harry enters the chamber to be confronted by Quirrell, who shares a body with Voldemort. Looking into the Mirror of Erised, Harry gets the Sorcerer's Stone. When Voldemort tries to take it from Harry, he is repelled by Harry's scar. Quirrell dies. Harry wakes up in the infirmary. He is visited by Dumbledore, then Ron and Hermione, and later Hagrid.
Gryffindor wins the House Cup, with help from some last-minute points awarded to Ron, Hermione, Harry, and Neville. The exam results come back with positive results, and Hogwarts is dismissed for the summer.
July 31
Harry turns twelve. The Dursleys have a dinner party for a potential client of Uncle Vernon's, and Harry is ordered to stay in his room. A house-elf named Dobby visits Harry, and implores him not to return to Hogwarts. Harry refuses, so Dobby uses a Hover Charm to dump a bowl of pudding on Aunt Petunia. Harry is confined to his room.
August 2
Percy Weasley gets his exam results, receiving twelve O.W.L.s (Ordinary Wizarding Levels).
August 3
The Weasleys show up in a flying car and take Harry home with them. Mrs. Weasley yells at her sons, but is relieved to see Harry again. Harry stays with Ron for the rest of the summer.
August 9-11
The letters from Hogwarts are sent out. Harry and the Weasleys head to Diagon Alley via Floo powder for school supplies. Harry takes a wrong turn and ends up in a shop on Knockturn Alley. He runs into Hagrid, meeting up with the Weasleys and Hermione at Gringotts Bank. They meet Gilderoy Lockhart at the bookstore, and Mr. Weasley gets into a fight with Lucius Malfoy. Lucius slips Tom Riddle's diary into one of Ginny Weasley's books.
September 1
The Weasleys take the flying car to King's Cross station to catch the Hogwarts Express. Harry and Ron are blocked from entering platform nine and three-quarters, and miss the train. Ron decides they should take the car to school. The flying car is spotted by two muggles, and the engine dies out just as they reach Hogwarts, crashing them into the Whomping Willow. The car flees into the woods, and Harry and Ron are caught by Snape. McGonagall gives both of them detention.
September 2
Classes begin at Hogwarts. The Gryffindor's first class is double Herbology with Professor Sprout, who puts them to work repotting mandrakes. After lunch they have class with Professor Lockhart, who sets pixies loose on the class.
September 5
Wood wakes up the Gryffindor team up at the crack of dawn to train. Practice is interrupted by the arrival of the Slytherin team, who now have new broomsticks and a new Seeker, Draco Malfoy. Malfoy calls Hermione a Mudblood, to which Ron casts a spell to retaliate, but it backfires. Harry and Hermione take Ron to Hagrid's to recover. Harry and Ron do their detentions, Ron with Filch and Harry with Lockhart. While addressing envelopes for Lockhart, Harry overhears the basilisk passing by.
October 24
Harry tracks mud into the castle and is caught by Filch. Nearly Headless Nick convinces Peeves to distract Filch, so Harry manages to escape detention. In return, Harry agrees to attend Nick's deathday party.
October 31
Harry, Hermione, and Ron attend Nearly Headless Nick's five-hundreth deathday party. Other guests at the party include Peeves, Moaning Myrtle, and the Headless Hunt. As the only living guests, the trio feels less than welcome, leaving early. On the way back upstairs, Harry hears the basilisk again, and they stumble upon the petrified body of Mrs. Norris.
November
Professor Binns explains the legend of the Chamber of Secrets to his second year History of Magic class. Students start to avoid Harry, believing that he is the Heir of Slytherin. Hermione decides to use polyjuice potion to trick Malfoy into admitting that he is the real perpetuator.
November 7
Hermione gets the potion book they need out of the library and makes plans to gather the necessary ingredients. The very first Quidditch game of the year is played, Gryffindor versus Slytherin. A bludger enchanted by Dobby concentrates on Harry, finally breaking his arm just as he catches the Snitch. Lockhart tries to repair Harry's arm, but accidentally removes the bones instead. Madame Pomfrey gives Harry Skele-Gro to regrow all the bones in his arm. Dobby visits Harry in the infirmary. Colin Creevey is attacked by the basilisk.
December 10
Harry throws a firework into Goyle's Swelling Potion during Potions, causing an explosion that distracts Snape while Hermione steals ingredients from his office.
December 17
Professors Lockhart and Snape start up a dueling club. Snape teams up Harry with Malfoy, who conjures up a snake. The snake attacks Justin Finch-Fletchley, so Harry speaks to the snake in Parseltongue to make it stop.
December 18
Harry tries to make amends with Justin and the other Hufflepuffs. He instead stumbles across both Justin and Nearly Headless Nick, both incapacitated by the basilisk. Harry is taken up to see Professor Dumbledore, but says nothing to the Headmaster.
December 25
Harry, Ron, and Hermione take the polyjuice potion. Hermione is transformed partly into a cat. Harry and Ron masquerade as Crabbe and Doyle, only to find out that Malfoy is not the Heir of Slytherin.
1993
January
Harry and Ron find Tom Riddle's diary.
February
Hermione leaves the infirmary.
February 14
Professor Lockhart throws a Valentine's Day Celebration for the school. Harry discovers the secret of Tom Riddle's diary, believing that it was Hagrid who opened the Chamber of Secrets fifty years ago.
April
The second year students choose their subjects for the next year. The Gryffindor dormitory is raided by Ginny Weasley. Hermione is attacked by the basilisk. The students are placed under extra restrictions in order to prevent further attacks. Hagrid is taken to Azkaban as an extra precaution, and Dumbledore is suspended as Headmaster.
May 24
Harry and Ron sneak into the Forbidden Forest and meet Aragog, a giant spider that Hagrid raised when he was at Hogwarts. Aragog tells them part of the truth regarding the attacks, then attempts to feed Harry and Ron to its young. They are saved by the Weasley's car.
May 29
Professor Sprout and Madam Pomfrey prepare the Mandrakes to be made into a potion that can revive all those who were petrified. Ginny Weasley is thought to be missing in the Chamber of Secrets. Harry and Ron head for the Chamber, with Professor Lockhart in tow. Lockhart reveals himself to be a fraud, and tries to wipe their memories. The spell backfires, and Lockhart's memory is completely erased. Ron and Lockhart remain behind while Harry enters the Chamber.
Harry is confronted by Tom Riddle, who summons the basilisk. Harry's loyalty to Dumbledore calls Fawkes to the Chamber, and the phoenix gives Harry the Sorting Hat, then gouges out the eyes of the basilisk. Harry pulls a sword from the hat and kills the serpent with it, then uses one of the basilisk's fangs to destroy the diary.
Fawkes helps Harry and the others escape, leading them to Professor McGonagall's office, where Professor Dumbledore is waiting with Mr. and Mrs. Weasley. Harry tells them the entire story, and then speaks with Dumbledore alone. Lucius Malfoy barges into the room, and Harry realizes that Lucius was the one who gave the diary to Ginny. Harry tricks Malfoy into setting Dobby free.
A feast is held for the entire school to celebrate. Exams are cancelled, Gryffindor wins the House Cup, Hagrid returns, and the victims of the basilisk are revived.
June
Classes are dismissed. Harry gives Ron and Hermione his telephone number, and they go home.
Professor Kettleburn retires. His position as Care of Magical Creatures teacher is filled by Hagrid.
July
Arthur Weasley wins the annual Daily Prophet Grand Prize Galleon Draw. The Weasleys go on vacation in Egypt.
July 18-24
Percy Weasley is made Head Boy of Hogwarts.
July 31
Harry turns thirteen. He receives letters and presents from Ron, Hermione and Hagrid, plus the annual Hogwarts notice.
Aunt Marge comes to visit. Vernon forces Harry to hide his magic ability, in exchange for signing the Hogsmeade permission slip.
August 2
Aunt Marge bad-mouths Harry's mother at dinner. Harry loses control and Marge's wine glass explodes in her hand.
August 5
Aunt Petunia cooks a big dinner for Marge's departure. Harry gets into a fight with Marge, causing her to swell like a balloon. Harry runs away from the Dursley's. He is picked up by the Knight Bus, and takes it to Diagon Alley, where he runs into Cornelius Fudge. Harry stays at the Leaky Cauldron for the remainder of his vacation.
August 31
Harry meets Ron and Hermione outside Florean Fortescue's Ice Cream Parlor. They take Ron's pet rat Scabbers head to the Magical Menagerie for a check-up, where Hermione buys a cat named Crookshanks. Harry overhears the Weasleys talking about Sirius Black.
September 1
Harry, Hermione, and the Weasleys board the Hogwarts Express. They end up sharing a cabin with Professor Lupin. The train is stopped midway by a dementor and Harry falls unconscious. Lupin scares it off with a Patronus.
September 2
Harry, Ron, and Hermione have their first class with Professor Trelawney, who predicts Harry's death. Before lunch they have Transfiguration, and after lunch is their first lesson with Hagrid. The lesson is ended early when Malfoy insults the hippogriff Buckbeak, who then attacks him.
Later that evening the trio goes to visit Hagrid in his cabin. Hagrid scolds Harry for going out after dark.
September 9
Malfoy finally reappears in class, continuing to milk his injuries for the purpose of getting Hagrid fired. Snape forces Ron and Harry to help Malfoy with his shrinking potion. Neville messes up his own potion and Hermione helps him fix it, but Snape still takes points away from Gryffindor.
After lunch they have their first class with Professor Lupin. He takes them into the staffroom, where a boggart is hiding in the wardrobe. Lupin allows each student excepting Harry and Hermione to tackle it.
October 7
Oliver Wood calls the first Quidditch meeting to discuss tactics. The team begins meeting three times a week for practice.
October 15
After one practice Harry settles down in the Gryffindor common room, where Hermione's cat Crookshanks tries to catch Ron's rat Scabbers.
October 16
Lavender Brown receives news that her baby rabbit Binky was killed by a fox. Professor McGonagall refuses permission for Harry to go to Hogsmeade on Halloween.
October 31
Ron and Hermione spend the day at Hogsmeade, while Harry is left behind. He witnesses Lupin willingly drink a potion concocted by Snape.
After the Halloween Feast the Gryffindors arrive back at their tower only to find the Fat Lady missing from her portrait, having been attacked by Sirius Black. All of the students spend the night in the Great Hall while the castle is searched thoroughly.
November
The Professors as well as Percy Weasley become overprotective of Harry because of the reappearance of Sirius Black.
November 5
Snape takes over Professor Lupin's class for one day, which results in Ron getting detention.
November 6
The Gryffindors play their first Quidditch match against Hufflepuff. In the middle of the match, the field is invaded by dementors. Harry loses consciousness and his broomstick gets destroyed by the Whomping Willow, while Gryffindor loses the match.
November 8
Lupin promises to teach Harry how to defend himself from the dementors.
November 27
The Ravenclaw team defeats Hufflepuff in Quidditch.
December 18
Fred and George give Harry the Marauder's Map so he can visit Hogsmeade. He goes to the Three Broomsticks with Hermione and Ron. He overhears several of the professors in conversation with Cornelius Fudge, and finds out that Black is the man who supposedly betrayed his parents.
December 19
First day of the Christmas break at Hogwarts.
December 25
Harry opens his Christmas presents and finds among them a brand-new Firebolt broomstick. There is no note to identify the giver, so Hermione and Professor McGonagall suspect it was sent by Sirius Black.
Professor Lupin takes ill again.
1994
January 6
Harry has his first lesson with Lupin. He learns how to create a Patronus to ward off the dementors.
January 8
The Slytherin team defeats Ravenclaw in Quidditch. Oliver Wood sees an opportunity for the Gryffindor team to advance to second place, so he increases team practices to five a week.
April 7-14
McGonagall gives Harry the Firebolt back after performing every possible test on it and finding nothing amiss.
Neville loses his list of all the Gryffindor Tower passwords, which he wrote down because he couldn't remember them.
Scabbers disappears, apparently eaten by Crookshanks. Ron gets mad at Hermione and the two of them stop hanging out with each other.
April 15
Harry returns to Quidditch practice with the Firebolt. The team has its best practice round ever.
April 16
Gryffindor plays Ravenclaw. Harry spots several dementors on the field and uses a Patronus to scare them off while he captures the Snitch. The Gryffindors win the match and the dementors turn out to be several of the Slytherins in disguise.
Sirius Black sneaks into Gryffindor Tower. He goes looking for Pettigrew but wakes Ron instead, who rouses the entire house and forces Black to flee again.
April 18
Neville gets a Howler from his grandmother for losing his password list, which Black found and used to get into Gryffindor Tower. Harry and Ron have tea with Hagrid, where he scolds the two boys for their recent behavior and advises Ron to make good with Hermione.
April 20
Hagrid takes Buckbeak for his hearing in London. The Committee for the Disposal of Dangerous Creatures rules for Buckbeak to be executed.
April 21
Harry sneaks into Hogsmeade with his invisibility cloak. Malfoy picks a fight with Ron in front of the Shrieking Shack and Harry fights back for Ron. The cloak slips free, revealing Harry's face. Malfoy reports back to Snape, who confronts Harry and finds the Marauder's Map. Snape is unable to discipher it and summons Lupin, who covers for Harry. Lupin confiscates the Marauder's Map.
Hermione gives Harry and Ron the bad news about Buckbeak. Hermione and Ron reconcile.
April 25-30
Malfoy insults Hagrid so Hermione slaps him. In Charms class Ron and Harry learn Cheering Charms but Hermione forgets to go. In Divination they begin working with crystal balls and Professor Trelawnley predicts Harry's death yet again. Hermione loses her temper and storms out of class.
May 1
The Easter holidays begin and the third years are loaded down with homework.
May 14
The Quidditch final against Slytherin. The Slytherins play dirty and foul the Gryffindors repeatedly. Gryffindor scores an early lead and Harry catches the Snitch, winning the Quidditch Cup.
May 22-31
Hogwarts students begin preparing for exam week. Percy Weasley studies for his N.E.W.T.s (Nastily Exhausting Wizarding Tests) while Fred and George practice for their O.W.L.s (Ordinary Wizarding Levels).
June 3
Exam week begins. The third years take their Transfiguration and Charms exams. Hermione has her Arithmancy and Ancient Runes examinations as well.
June 4
Final exams for Care of Magical Creatures and Potions. Hagrid gives the class flobberworms to take care of again. Harry is convinced Professor Snape gave him a zero for his Confusing Concoction.
At midnight the Astronomy exam is given.
June 5
Final exams for History of Magic and Herbology.
June 6
Defense Against the Dark Arts final exam.
Cornelius Fudge arrives to oversee the execution of Buckbeak.
Harry and Ron take their Divination exam. During Harry's test Professor Trelawney makes a genuine prediction about the return of the Dark Lord. She doesn't remember anything afterwards.
Hagrid loses the appeal for Buckbeak's life. Ron, Harry, and Hermione sneak over to Hagrid's to try and help, but Hagrid forces them to leave. Once outside Ron runs off after Scabbers, and the pair is grabbed by Sirius Black in his dog form. Harry and Hermione follow them through the secret tunnel to the Shrieking Shack. Harry tries to kill Black but is stopped by Crookshanks. Lupin arrives and tells Harry the story of Moony, Wormtail, Padfoot, and Prongs. Snape shows up and tries to apprehend both Black and Lupin, but is knocked out by Harry and his friends. Scabbers is revealed to be Pettigrew. Lupin and Black want to kill Pettigrew but Harry stops them from doing so. They take Pettigrew back to the castle, but Lupin begins to change into his werewolf form. Both Pettigrew and Lupin escape into the woods while Harry and Hermione are attacked by the dementors. They are saved by the arrival of a Patronus conjured by Harry's future self. Snape wakes up and takes the credit for capturing Black.
Dumbledore gives Hermione permission to use her Time Turner to set things right. They rescue Buckbeak from being executed. Harry conjures a Patronus to save his past self and Hermione from the dementors. They retrieve Sirius Black from Flitwick's office by flying up to the window on Buckbeak. Sirius and Buckbeak escape together.
June 7
Harry, Ron, and Hermione leave the hospital wing. Lupin resigns his teaching position and returns the Invisibility Cloak and Marauder's Map to Harry. Dumbledore and Harry have a talk.
June 14
Harry, Hermione, and Ron get their exam results back. They have passed every subject, even Potions. Hermione drops Muggle Studies. Percy does well on his N.E.W.T.s while Fred and George each come out with a handful of O.W.L.s. Gryffindor House wins the House Cup for the third year running.
June 15
The students board the Hogwarts Express to go home. Harry gets a letter from Sirius, and Ron gets a new owl.