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Dominical Letter Calendar

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The Dominical Letter Calendar is a version of the Gregorian Calendar that can be used either as a perennial calendar, or as a perpetual calendar of continuous weeks.

Each day of the year is assigned a letter of the alphabet from A to G. 01-January is always A-day, and all the rest of the days of the year are lettered in sequence, each day of the year always having the same letter name. The letters continue through 31-December, which is also an A-day. The Sequence recommences with A-day on 01-January of the year following. 29-February (leap day), when it occurs, repeats C-day, the dominical letter day of 28-February.

An example of the calendar is shown below. To use it as a perennial calendar, simply call each day of the week by the dominical letter of that calendar date. To use it as a perpetual calendar of continuous weeks, scroll down to the end of the calendar to find a table which assigns the traditional, continuous weekday names that correspond to the dominical letter of any year. Just remember that in leap year the dominical letter of the year moves to the preceding letter of the alphabet.

Dominical Letter Calendar
Week A-day B-day C-day D-day E-day F-day G-day
01 01-Jan 02-Jan 03-Jan 04-Jan 05-Jan 06-Jan 07-Jan
02 08-Jan 09-Jan 10-Jan 11-Jan 12-Jan 13-Jan 14-Jan
03 15-Jan 16-Jan 17-Jan 18-Jan 19-Jan 20-Jan 21-Jan
04 22-Jan 23-Jan 24-Jan 25-Jan 26-Jan 27-Jan 28-Jan
05 29-Jan 30-Jan 31-Jan 01-Feb 02-Feb 03-Feb 04-Feb
06 05-Feb 06-Feb 07-Feb 08-Feb 09-Feb 10-Feb 11-Feb
07 12-Feb 13-Feb 14-Feb 15-Feb 16-Feb 17-Feb 18-Feb
08 19-Feb 20-Feb 21-Feb 22-Feb 23-Feb 24-Feb 25-Feb
09 26-Feb 27-Feb 28-Feb 01-Mar 02-Mar 03-Mar 04-Mar
10 05-Mar 06-Mar 07-Mar 08-Mar 09-Mar 10-Mar 11-Mar
11 12-Mar 13-Mar 14-Mar 15-Mar 16-Mar 17-Mar 18-Mar
12 19-Mar 20-Mar 21-Mar 22-Mar 23-Mar 24-Mar 25-Mar
13 26-Mar 27-Mar 28-Mar 29-Mar 30-Mar 31-Mar 01-Apr
14 02-Apr 03-Apr 04-Apr 05-Apr 06-Apr 07-Apr 08-Apr
15 09-Apr 10-Apr 11-Apr 12-Apr 13-Apr 14-Apr 15-Apr
16 16-Apr 17-Apr 18-Apr 19-Apr 20-Apr 21-Apr 22-Apr
17 23-Apr 24-Apr 25-Apr 26-Apr 27-Apr 28-Apr 29-Apr
18 30-Apr 01-May 02-May 03-May 04-May 05-May 06-May
19 07-May 08-May 09-May 10-May 11-May 12-May 13-May
20 14-May 15-May 16-May 17-May 18-May 19-May 20-May
21 21-May 22-May 23-May 24-May 25-May 26-May 27-May
22 28-May 29-May 30-May 31-May 01-Jun 02-Jun 03-Jun
23 04-Jun 05-Jun 06-Jun 07-Jun 08-Jun 09-Jun 10-Jun
24 11-Jun 12-Jun 13-Jun 14-Jun 15-Jun 16-Jun 17-Jun
25 18-Jun 19-Jun 20-Jun 21-Jun 22-Jun 23-Jun 24-Jun
26 25-Jun 26-Jun 27-Jun 28-Jun 29-Jun 30-Jun 01-Jul
27 02-Jul 03-Jul 04-Jul 05-Jul 06-Jul 07-Jul 08-Jul
28 09-Jul 10-Jul 11-Jul 12-Jul 13-Jul 14-Jul 15-Jul
29 16-Jul 17-Jul 18-Jul 19-Jul 20-Jul 21-Jul 22-Jul
30 23-Jul 24-Jul 25-Jul 26-Jul 27-Jul 28-Jul 29-Jul
31 30-Jul 31-Jul 01-Aug 02-Aug 03-Aug 04-Aug 05-Aug
32 06-Aug 07-Aug 08-Aug 09-Aug 10-Aug 11-Aug 12-Aug
33 13-Aug 14-Aug 15-Aug 16-Aug 17-Aug 18-Aug 19-Aug
34 20-Aug 21-Aug 22-Aug 23-Aug 24-Aug 25-Aug 26-Aug
35 27-Aug 28-Aug 29-Aug 30-Aug 31-Aug 01-Sep 02-Sep
36 03-Sep 04-Sep 05-Sep 06-Sep 07-Sep 08-Sep 09-Sep
37 10-Sep 11-Sep 12-Sep 13-Sep 14-Sep 15-Sep 16-Sep
38 17-Sep 18-Sep 19-Sep 20-Sep 21-Sep 22-Sep 23-Sep
39 24-Sep 25-Sep 26-Sep 27-Sep 28-Sep 29-Sep 30-Sep
40 01-Oct 02-Oct 03-Oct 04-Oct 05-Oct 06-Oct 07-Oct
41 08-Oct 09-Oct 10-Oct 11-Oct 12-Oct 13-Oct 14-Oct
42 15-Oct 16-Oct 17-Oct 18-Oct 19-Oct 20-Oct 21-Oct
43 22-Oct 23-Oct 24-Oct 25-Oct 26-Oct 27-Oct 28-Oct
44 29-Oct 30-Oct 31-Oct 01-Nov 02-Nov 03-Nov 04-Nov
45 05-Nov 06-Nov 07-Nov 08-Nov 09-Nov 10-Nov 11-Nov
46 12-Nov 13-Nov 14-Nov 15-Nov 16-Nov 17-Nov 18-Nov
47 19-Nov 20-Nov 21-Nov 22-Nov 23-Nov 24-Nov 25-Nov
48 26-Nov 27-Nov 28-Nov 29-Nov 30-Nov 01-Dec 02-Dec
49 03-Dec 04-Dec 05-Dec 06-Dec 07-Dec 08-Dec 09-Dec
50 10-Dec 11-Dec 12-Dec 13-Dec 14-Dec 15-Dec 16-Dec
51 17-Dec 18-Dec 19-Dec 20-Dec 21-Dec 22-Dec 23-Dec
52 24-Dec 25-Dec 26-Dec 27-Dec 28-Dec 29-Dec 30-Dec
53 31-Dec
Correspondence to traditional names of the days of the week
DL  A-Day B-Day C-Day D-Day E-Day F-Day G-Day
A Su Mo Tu We Th Fr Sa
B Sa Su Mo Tu We Th Fr
C Fr Sa Su Mo Tu We Th
D Th Fi Sa Su Mo Tu We
E We Th Fr Sa Su Mo Tu
F Tu We Th Fr Sa Su Mo
G Mo Tu We Th Fr Sa Su

— Walter Ziobro

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