Lexicon Sources
J.K.Rowling - Official Site

Some interesting statistics and trends
as of March 31, 2006:

Three of the 5 door openings were on a Monday, except Hallowe'en (which was a Sunday) and the current one on March 31, a Friday.

Most FAQ Polls were answered on a Monday
The first 3 FAQ polls were all answered on a Monday, the fourth was answered on a Friday (the day before HBP publication) and the fifth on Tuesday (same day as the Black Family Tree auction).

The first 3 Polls and 3 door openings  were preceded by a birthday within the week, usually the day before! (3 out of 6 times).

Door openings lasted: 4 days - 10 days - 15 days - 6 days

Time between door openings:
1 Month, 19 Days
2 Months, 15 Days
1 Month, 19 Days
1 Year, 3 Months, 11 Days

10 of the original 19 birthdays announcements were on Sunday. Another 3 were Mondays. The remaining 6 corresponded to a holiday, or the first or last of the month (twins, Ron, Neville, Harry, Molly the day before Hallowe'en).

Birthdays: (total 19)
first week of month = 6
second week of month = 5
third week of month = 3
last week of month = 5
(first or last or next-to-last day of month = 5)

Major updates:
Mondays = 12
Tuesdays = 3
Wednesdays = 4
Thursdays = 3
Fridays = 4
Saturdays = 1
Sundays = 4

Of all updates: (not counting Wizard of the Month, always on the 1st)
Mondays = 21
Tuesdays = 13 (5 corrections from Monday updates, )
Wednesdays = 8
Thursdays = 10
Fridays = 7
Saturdays = 9 (4 corresponding to a holiday)
Sundays = 14 (10 were birthdays)

Wizards of the month always alternate male - female, except Oct-Nov 2005, when there were two witches in a row.
 
 

May 15, 2004 to present

Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
						May 15, 2004 Site Launched 4 original Scrapbook extras, Fansite: Immeritus, 1st FAQ poll WotM Felix Summerbee
May 16	17	18	19	20	21	22
May 23	24	25	26	27	28	29
May 30	31	June 1 WotM Gwenog Jones Fansite Award: Godric's Hollow	June 2  Update: Three new Rumours & Two New Daily News articles, FAQ's	3	4	5
June 6	7	8	9	10	11	12
June 13	14	15	16	17	18	19
June 20	21	22	23	24	25	26
June 27	June 28 Door opened for the first time  (brick wall puzzle revealing book 6 title Harry Potter and the Half Blood Prince) Fansite Award: The Harry Potter Lexicon Two new Rumours	June 29 Update: Daily News article	30	July 1 WotM Donaghan Tremlett	July 2 Do Not Disturb sign reappeared	3
July 4	July 5 1st FAQ Poll answered	6	7	8	9	July 10 Update: Daily News article
July 11	12	13	14	15	16	17
July 18	July 19  2nd FAQ poll opens	20	21	22	23	July 24 Update: Daily News article
July 25	July 26 Update: FAQ's	27	28	29	July 30 Happy Birthday  Neville Longbottom	July 31 Happy Birthday Harry Potter!
August 1 WotM Honoria Nutcombe	2	3	4	5	6	7
August 8	9	10	August 11 Happy Birthday Ginny Weasley	12	13	14
August 15 Update: Daily News article	August 16 Door opens for the second time (darts and Gringotts safe puzzles revealing HBP excerpt) Update: Many new things on ExtraStuff bulletin board, FAQ's answered	17	18	19	20	21
August 22 Happy Birthday Percy Weasley	23	24	25	August 26 Do Not Disturb sign reappeared	27	28
August 29	30	31	September 1 WotM Uric the Oddball	2	3	4
September 5	September 6 Fansite Award: Mugglenet	7	8	9	10	11
September 12	13	14	15	September 16 Marble,  Gum wrapper Portkey (Rubbish bin) added,   Update: FAQ's, 3 new Scrapbook extras	17	18
September 19 Happy Birthday Hermione Granger	20	21	22	23	24	25
September 26	27	28	29	30	October 1 WotM Glenda Chittock	2
October 3	October 4 Happy Birthday Minerva McGonagall 2nd FAQ Poll answered & other FAQ's Minesweeper Update in ExtraStuff-Misc., New Rubbish bit	October 5 Post Script (P.S.) to FAQ Poll answer & FAQ clarification on Colin's Camera	6	7	8	9
October 10	11	12	13	14	15	16
October 17 Happy Birthday Filius Flitwick	18	19	20	21	22	23
October 24	25	26	27	28	29	October 30 Happy Birthday Molly Weasley
October 31 (Halloween) Door opens  for the third time (flying keys, magnifying glass & riddle puzzles revealing 3 HBP chapter titles)	November 1 WotM Devlin Whitehorn	2	3	4	5	6
November 7	8	9	10	11	12	13
November 14	November 15 Do Not Disturb sign reappeared	16	17	18	19	20
November 21	22	23	24	25	26	27
November 28	November 29 Happy Birthday Bill Weasley	30	December 1 WotM Ignatia Wildsmith Christmas decorations	2	3	4
December 5	December 6 Happy Birthday Hagrid	7	8	9	December 10 3rd FAQ Poll Update: Rumours, News, Rubbish, ExtraStuff, FAQ's Fan Site Award: HPANA	11
December 12 Happy Birthday Charlie Weasley	13	December 14 change in Welcome message  (book six to seven)	15	16	17	18
December 19	December 20 Door opens for the fourth time: Christmas present riddles revealing HBP is finished!	21	December 22 Update: News, Rumours regarding HBP release date (announced previous day)	23	24	December 25 (Christmas) Mysterious blue candy (glitch?) in Extra Stuff
December 26 Do Not Disturb sign reappeared	27	28	29	30	31	January 1, 2005 WotM Derwent Shimpling Biography journal date changed, archives blank on flash site
January 2, 2005	3	January 4 Archive entries restored and WotM "Venomous" edited	5	January 6 Christmas decorations removed	7	8
January 9 Happy Birthday Severus Snape	10	11	12	13	14	15
January 16	17	18	19	20	21	22
January 23	24	January 25 Daily News headline: JKR gives Birth to Baby Girl	26	27	28	29
January 30	January 31 Update: Daily News, Rubbish Bin, ExtraStuff-Miscellaneous	February 1 WotM  Artemisia Lufkin Owl entry in ExtraStuff is changed	February 2 HPB typo in News is edited	3	4	5
February 6 Happy Birthday Arthur Weasley	7	8	9	10	11	12
February 13	14  (Valentine's Day)	15	16	17	18	19
February 20	21	22	23	24	25	26
February 27	28	March 1 Happy Birthday  Ron Weasley WotM Mungo Bonham	March 2  (Flash version)  WotM Mungo Bonham	3	4	5
March 6	7	8	9	March 10 Happy Birthday Remus Lupin	11	12
March 13	14	15	16	17	18	19
March 20	21	22	23	24	25	26
March 27	28	29	30	31	April 1 Happy Birthday  Fred and George Weasley WotM Gondoline Oliphant	April 2 (Flash version)  WotM Gondoline Oliphant
April 3	4	5	April 6 Update:  Rumours, FAQ's	7	8	9
April 10	11	12	13	14	15	16
April 17	18	19	20	21	22	23
April 24	25	26	27	28	29	30
May 1 WotM Felix Summerbee (same as May 2004)	2	3	4	5	6	7
May 8	9	10	11	12	May 13 Update: Rumour, News, FAQ's FanSite Award: The Leaky Cauldron	14
May 15 Happy Birthday Pomona Sprout (1st Anniversary of site launch)	May 16 3rd FAQ Poll answered Update: Rumour	17	18	19	20	21
May 22	23	24	25	May 26 Updates: News, and Rubbish bin urging fans to ignore HBP rumours	27	28
May 29	30	May 31 4th FAQ Poll	June 1 WotM Elfrida Clagg	2	3	4
June 5 Happy Birthday Draco Malfoy	6	7	8	9	10	11
June 12	13	14	15	16	17	18
June 19	20	21	22	23	24	25
June 26	27	June 28 Happy Birthday Dobby	29	30	July 1 WotM Chauncey Oldridge	2
July 3	4	5	6	7	8	9
July 10	11	12	13	14	July 15 4th FAQ Poll answered	July 16 (HBP published)
July 17	July 18 Accessibility tools for assistive technology added	19	20	July 21 Update: Daily News, Rubbish Bin, ExtraStuff-Miscellaneous	22	23
July 24	25	26	27	28	29	July 30 Happy Birthday  Neville Longbottom
July 31 Happy Birthday Harry Potter and Jo Rowling 40th	August 1 WotM Bridget Wenlock	2	3	4	5	6
August 7	August 8 JKR's 40th birthday decorations removed	9	10	August 11 Happy Birthday Ginny Weasley	12	13
August 14	15	16	17	18	19	20
August 21	August 22 Happy Birthday Percy Weasley	23	24	25	26	27
August 28	29	30	31	September 1 WotM Gaspard Shingleton	2	3
September 4	5	6	September 7 Update: Daily News	8	9	10
September 11	September 12 Update: Daily News	13	14	15	16	17
September 18	September 19  Happy Birthday Hermione Granger	20	21	22	23	24
September 25	26	27	28	29	30	October 1 WotM Fifi LaFolle
October 2	3	October 4 Happy Birthday Minerva McGonagall	5	6	7	8
October 9	10	11	12	13	14	15
October 16	October 17 Happy Birthday Filius Flitwick	18	19	20	21	22
October 23	24	25	26	27	28	29
October 30 Happy Birthday Molly Weasley	31 (Halloween)	November 1 WotM Carlotta Pinkstone	2	3	4	5
November 6	7	8	9	10	11	12
November 13	14	15	16	17	18	19
November 20	21	22	23	24	25	26
November 27	28	November 29 Happy Birthday Bill Weasley	30	December 1 WotM Bowman Wright	2	3
December 4	5	December 6 Happy Birthday Hagrid	7	8	9	10
December 11	December 12 Happy Birthday Charlie Weasley	13	December 14 Entry screen re-design	15	16	17
December 18	December 19 Christmas decorations	20	21	22	23	24
December 25 (Christmas) 5th FAQ Poll Update: Diary added, Rumours, Rubbish	26 (Boxing Day)	27	28	29	30	31
January 1, 2006	2	3	4	January 5 Diary entry 2	January 6 Christmas decorations removed	7
January 8, 2006	January 9 Happy Birthday Severus Snape	10	11	12	13 copyright & Lightmaker link moved	14
January 15, 2006	16	17	18	19	20	21
January 22	23	24	January 25 Update: Daily News Diary entry 3	26	27	28
January 29	30	31	February 1 WotM Yardley Platt	2	3	4
February 5	February 6 Happy Birthday Arthur Weasley	7	8	9	10	11
February 12	13	14	15	16	17	18
February 19	20	February 21 5th FAQ Poll answered	22	February 23 Cage Beds Link added	24	25
February 26	27	February 28 Update: Rubbish,  Diary Entry 4	March 1 Happy Birthday  Ron Weasley WotM Daisy Dodderidge	2	3	4
March 5	6	7	8	March 9 Major site revamp 5 new Scrapbook Extras	March 10 Happy Birthday Remus Lupin	11
March 12	13	14	15	16	17	18
March 19	20	21	22	23	24	25
March 26	27	28	29	30	March 31 Door opens for the fifth time: WOMBAT exam	April 1 Happy Birthday  Fred and George Weasley WotM Grogan Stump