>> From CUVMB.CC.COLUMBIA.EDU!JCHBN Mon Jan 31 15:48:36 1994 >> From: "John F. Chandler" >> Subject: Another perpetual calendar for the archives? Perpetual calendar instructions: see below. Month lengths: 0 1 2 3 4 Julian Calendar 30-Sep, Apr, Jun, Nov. 5 6 7 8 9 10 11 (hundreds of years AD) 31-Jan, Mar, May, Jul, 12 13 14 15 16 17 18 Aug, Oct, Dec. 19 28/29-Feb. 1500 1600 1700 1800 1900 Gregorian Calendar 2000 2100 2200 2300 (years AD) Dominical letters - 5 11 16 22 - 33 39 44 G F E D C B A 50 - 61 67 72 78 - 89 95 0 6 - 17 23 28 34 - 45 A G F E D C B 51 56 62 - 73 79 84 90 - 1 7 12 18 - 29 35 40 46 B A G F E D C - 57 63 68 74 - 85 91 96 2 - 13 19 24 30 - 41 47 C B A G F E D 52 58 - 69 75 80 86 - 97 3 8 14 - 25 31 36 42 - D C B A G F E 53 59 64 70 - 81 87 92 98 - 9 15 20 26 - 37 43 48 E D C B A G F 54 - 65 71 76 82 - 93 99 4 10 - 21 27 32 38 - 49 F E D C B A G 55 60 66 - 77 83 88 94 - A:Jan, E:Feb, E:Mar, B:Jan, F:Feb, F:Mar, C:Jan, G:Feb, G:Mar, B:Apr, G:May, D:Jun, C:Apr, A:May, E:Jun, D:Apr, B:May, F:Jun, B:Jul, F:Aug, C:Sep, C:Jul, G:Aug, D:Sep, D:Jul, A:Aug, E:Sep, A:Oct, E:Nov, C:Dec B:Oct, F:Nov, D:Dec C:Oct, G:Nov, E:Dec S M T W T F S S M T W T F S S M T W T F S 1 2 3 4 5 6 7 1 2 3 4 5 6 1 2 3 4 5 8 9 10 11 12 13 14 7 8 9 10 11 12 13 6 7 8 9 10 11 12 15 16 17 18 19 20 21 14 15 16 17 18 19 20 13 14 15 16 17 18 19 22 23 24 25 26 27 28 21 22 23 24 25 26 27 20 21 22 23 24 25 26 29 30 31 28 29 30 31 27 28 29 30 31 -------------------------------------------------------------------- D:Jan, A:Feb, A:Mar, E:Jan, B:Feb, B:Mar, F:Jan, C:Feb, C:Mar, E:Apr, C:May, G:Jun, F:Apr, D:May, A:Jun, G:Apr, E:May, B:Jun, E:Jul, B:Aug, F:Sep, F:Jul, C:Aug, G:Sep, G:Jul, D:Aug, A:Sep, D:Oct, A:Nov, F:Dec E:Oct, B:Nov, G:Dec F:Oct, C:Nov, A:Dec S M T W T F S S M T W T F S S M T W T F S 1 2 3 4 1 2 3 1 2 5 6 7 8 9 10 11 4 5 6 7 8 9 10 3 4 5 6 7 8 9 12 13 14 15 16 17 18 11 12 13 14 15 16 17 10 11 12 13 14 15 16 19 20 21 22 23 24 25 18 19 20 21 22 23 24 17 18 19 20 21 22 23 26 27 28 29 30 31 25 26 27 28 29 30 31 24 25 26 27 28 29 30 --------------------- 31 G:Jan, D:Feb, D:Mar, A:Apr, F:May, C:Jun, Find the desired style and century at the top. A:Jul, E:Aug, B:Sep, Look in the column under the century to find the G:Oct, D:Nov, B:Dec Dominical letter corresponding to a particular year (tabulated to the left and right). Use that S M T W T F S letter in normal years for all months and in leap 1 years for the months March through December, but 2 3 4 5 6 7 8 back up one letter for January and February in 9 10 11 12 13 14 15 leap years (corresponding to the dash preceding 16 17 18 19 20 21 22 the desired year). Find the calendar for the 23 24 25 26 27 28 29 desired letter:month combination at the bottom. 30 31 Hint: for each month, the letter goes up by one on the next calendar to the right. Example: the table gives "B" for 1984, but use "A" for the first two months of that year. January 1 is Sunday, May 1 is Tuesday.