The Lexicon

Day-by-Day Calendar of Philosopher’s Stone

Day-by-Day Calendar of Philosopher’s Stone

NOTE: This calendar is NOT formatted for smaller screens. We are working to create a version which will work on any size device, but that’s a bit trickier than you might think with the calendar layout. Since this is a direct port from an outdated system, some of the formatting might be a bit wonky and some links might not work. 

“You did do the thing properly, didn’t you?”
— Albus Dumbledore

The calendars which follow were carefully researched and are based on various references in the canon. Harry Potter was born on July 31, 1980. Therefore the events of the first chapter of this book take place on November 1, 1981, the day after Harry’s parents were killed. The second chapter takes place on a Saturday, approximately one month and one week before Harry’s 11th birthday, which is June 22, 1991. The events of chapter three take place in the week leading up to Harry’s eleventh birthday, which we know is July 31, 1991.

Unfortunately, the information in the books does not match the calendar of 1991 exactly. The book says that Harry’s birthday is on a Tuesday, while July 31, 1991, is actually on a Wednesday. To stay true to the books, we will remove a day before Harry’s birthday, place the events on the days listed, then adjust the calendar by adding a day to get things back on track.

The Official Timeline of Hogwarts (CS/dvd) was derived from this timeline. September 7 is listed on the Official Timeline as being when Harry and Ron visit Hagrid in his hut. This was an error which also appeared on this calendar until I caught the error and corrected it. The DVD timeline reproduced this error from the Lexicon timeline. However, the 7th is a Saturday, while the book states that they visited Hagrid on the afternoon of the Friday of their first week. This calendar now places that visit on Friday, September 6, which is correct. Events which are actually listed on the official timeline are indicated on this calendar in red.

The dates given on this calendar are either stated specifically in the books or can be deduced with a fair degree of certainty. Some events, such as Norbert’s arrival, are given approximately and are therefore written in blue.

July 1991 – July 1992

SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY SATURDAY references
Jun 17 18 19 20 21 22 23
Dudley’s 11th birthdaythe trip to the zooHarry is locked in his cupboard
PS2
Jun 24 25 26 27 28 29 30 PS2
Harry locked in his cupboard
Jul 1 2 3 4 5 6 7 PS2
Harry locked in his cupboard
Jul 8 9 10 11 12 13 14 Harry locked in his cupboard
Jul 15 16 17 18 19 20 21 Harry locked in his cupboard

Mrs. Figg has broken her leg, but she comes to Privet Drive on crutches, only to be knocked over by Dudley

Jul 22 23 24
a letter arrives for Harry PotterUncle Vernon and Aunt Petunia burn it but move Harry from the cupboard to Dudley’s second bedroom
25
another letter arrives for Harry but Uncle Vernon gets it first and destroys it
26
Harry gets up at 6 to get the mail but steps on Uncle Vernon who is sleeping in the hall to catch himthree letters arrive
27
12 letters arriveUncle Vernon boards up every crack around every door and window
28
24 letters arrive, rolled up inside eggs delivered to the houseAunt Petunia shreds the letters in her food processor
PS3
Jul 29
30 or 40 letters come pouring out of the kitchen chimneyUncle Vernon packs everyone into the car and drives around a lotthey stay overnight in the Railview Hotel, Cokeworth
30
about a hundred letters arrive for Harry at the front desk of the hotelUncle Vernon drives them around again and finally discovers the Hut On The Rocka tremendous storm blows up but at midnight, Hagrid appears at the door
31
Harry’s 11th birthdayHagrid gives Harry his letter from HogwartsHagrid takes Harry to Diagon Alley to buy his things for Hogwarts
EXTRA DAY ADDED IN TO MAKE CALENDAR AGREE WITH ACTUAL DATES Aug 1 2 3 PS3PS4PS5
Aug 4 5 6 7 8 9 10 PS6
the Dursleys pretend that Harry doesn’t exist
Aug 11 12 13 14 15 16 17 PS6
Aug 18 19 20 21 22 23 24 PS6
Aug 25 26 27 28 29 30 31 PS6
Sep 1
Harry travels to Hogwarts on the Hogwarts ExpressHarry sorted into GryffindorDudley in London having his tail removed
2
first day of termHarry and Ron get into trouble with Filch, who thinks they’re trying to break into the forbidden third floor corridor
3 4
midnight: astronomy class
5
Transfiguration class
6
Hedwig delivers her first message to Harry: an invitation to visit Hagrid that afternoon; he responds “Yes, please!”morning: first potions class: double Potions wth Slytherin, Harry gets on Snape’s bad side and loses five pointsafternoon off, tea with Hagrid at 3 o’clock
7
(afternoon tea with Hagrid, according to the official timeline, although this is a Saturday and the book says that they visit Hagrid on the Friday at the end of their first week of classes)
PS7PS8
Sept 8 9 10 11
midnight: astronomy class
12
3:30 pm:
first flying lessonNeville breaks his wristHarry is made SeekerMalfoy challenges Harry to a duel at midnight, they discover Fluffy
13 14 PS9
Quidditch trials this week
Sept 15 16 17 18
midnight: astronomy class
19
Hermione’s 12th birthday
20
Harry receives his Nimbus 20007pm first Quidditch practice
21 PS10
Sept 22 23 24 25
midnight: astronomy class
26 27 28 PS10
Quidditch practice three times per week from here on
Sept 29 30 Oct 1 2
midnight: astronomy class
3 4 5
Oct 6 7 8 9
midnight: astronomy class
10 11 12
Oct 13 14 15 16
midnight: astronomy class
17 18 19
Oct 20 21 22 23
midnight: astronomy class
24 25 26 C
Oct 27 28 29 30
midnight: astronomy class
31
HALLOWE’ENCharms class: Wingardium LeviosaFeast interrupted by the arrival of a Mountain TrollHarry and Ron rescue Hermione from the troll
Nov 1 2 PS10
weather turned very cold
Nov 3 4 5 6
midnight: astronomy class
7 8
Snape takes Harry’s copy of Quidditch Through The AgesHarry sees that Snape has been bitten in the leg by Fluffy
9
Quidditch: Gryffindor vs. Slytherin, 11am
Gryffindor wins when Harry catches the Snitch in his mouthSnape counters Quirrell’s jinxes and saves Harry’s life
PS11
Nov 10 11 12 13
midnight: astronomy class
14 15 16
Nov 17 18 19 20
midnight: astronomy class
21 22 23
Nov 24 25 26 27
midnight: astronomy class
28 29 30
Dec 1 2 3 4
midnight: astronomy class
5 6 7
Dec 8 9
McGonagall takes names of those staying at Hogwarts over Christmas
10 11
midnight: astronomy class
12 13 14 PS12
Hogwarts is covered by several feet of snow
Dec 15 16 17 18
midnight: astronomy class
19 20 21
morning:
Hagrid is setting up the twelve Christmas trees in the Great Hall
PS12
Dec 22 23
end of termHogwarts Express back to London
24 25
CHRISTMASHarry receives his father’s Invisibility Cloak for a presentHarry discovers the Mirror of Erised
26
Harry returns to the Mirror with Ron
27
Harry goes to the Mirror and encounters Dumbledore
28 PS12
Harry and Ron, pretty much the only ones in Gryffindor Tower, spend their time toasting things on the fire and playing wizard chess
Dec 29 30 31 Jan 1 2 3 4 PS13
Harry begins having nightmares about his parents’ death
Jan 5
Hogwarts Express back to school
6
start of term
7 8
midnight: astronomy class
9 10 11 PS13
weather turns rainy, wet and cold
Jan 12 13 14 15
midnight: astronomy class
16 17 18
Jan 19 20 21 22
midnight: astronomy class
23 24 25
Jan 26 27 28 29
midnight: astronomy class
30 31 Feb 1
Feb 2 3 4 5
midnight: astronomy class
6 7 8
Feb 9 10 11 12
midnight: astronomy class
13 14 15
Feb 16 17 18 19
midnight: astronomy class
20 21 22
Quidditch match between Hufflepuff and Gryffindor which Snape referees
Feb 23 24 25 26
midnight: astronomy class
27 28 29
Mar 1
Ron’s 12th birthday
2 3 4
midnight: astronomy class
5 6 7
Mar 8 9 10 11
midnight: astronomy class
12 13 14
Mar 15 16 17 18
midnight: astronomy class
19 20 21
Mar 22 23
Hermione begins prepping for exams
24 25
midnight: astronomy class
26 27 28 PS14
Mar 29 30 31 Apr 1
midnight: astronomy class
2 3 4
Apr 5 6 7 8
midnight: astronomy class
9 10 11
Apr 12 Easter holidays begin 13 14 15 16 17 18
Apr 19 20 21 22 24

Easter holidays end
Norbert hatches

25
Apr 26 27 28 29
midnight: astronomy class
30 May 1 2
May 3 4 5 6
Ron is bitten by Norbertmidnight: astronomy class
7
Ron goes to the hospital wing with his hand badly infected and poisoned
8
Ron in hospital
9
Ron in hospitalmidnight:
Charlie’s friends take Norbert
PS14
May 10
1 am:
Harry, Neville, and Hermione lose 150 points for Gryffindor
11 12 13
midnight: astronomy class
14 15 16 PS14PS15
May 17 18 19 20
midnight: astronomy class
21 22 23 Harry, Neville, and Hermione are shunned and insulted for losing all those points
May 24 25
Harry overhears Quirrell talking to someone whom he assumes is Snape
26
11 pm: detentions in the Forbidden Forest
27
midnight: astronomy class
28 29 30 PS15
May 31 Jun 1
exams
2
exams
3
exams
4
examslast one: History of Magicevening:
Harry, Ron, and Hermione follow Quirrell into the trap door after the Stone
5
Harry unconscious in hospital
6
Harry unconscious in hospitalQuidditch match: Gryffindor loses to Ravenclaw because Harry is in hospital
PS16PS17
June 7
Harry unconscious in hospital
8
Harry released from hospitalend-of-year feast at which Gryffindor wins the house cup
9 10 11
exam results come out
12 13 PS17
June 14 15 16 17 18 19 20
Hogwarts Express back to LondonUncle Vernon locks up Harry’s spell books and broomstick and padlocks Hedwig’s cage
PS17CS1
June 21 22 23
Dudley’s 12th birthday
24 25 26 27
June 28 29 30 Jul 1 2 3 4
July 5 6 7 8 9 10 11
July 12 13 14 15 16 17 18
July 19 20 21 22 23 24 25
July 26 27 28 29 30 31
Harry’s 12th birthday
Aug 1

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