0/0/0 - The Mayan Calendars Long Count Tzolkin Haab

Month Day

POP

8/12/-1582

8/13/-1582

8/14/-1582

8/15/-1582

8/16/-1582

8/17/-1582

8/18/-1582

8/19/-1582

8/20/-1582

8/21/-1582

8/22/-1582

8/23/-1582

8/24/-1582

8/25/-1582

8/26/-1582

8/27/-1582

8/28/-1582

8/29/-1582

8/30/-1582

8/31/-1582

9/1/-1582

9/2/-1582

9/3/-1582

9/4/-1582

9/5/-1582

9/6/-1582

9/7/-1582

9/8/-1582

9/9/-1582

9/10/-1582

9/11/-1582

9/12/-1582

9/13/-1582

9/14/-1582

9/15/-1582

9/16/-1582

9/17/-1582

9/18/-1582

9/19/-1582

9/20/-1582

SIP

9/21/-1582

9/22/-1582

9/23/-1582

9/24/-1582

9/25/-1582

9/26/-1582

9/27/-1582

9/28/-1582

9/29/-1582

9/30/-1582

10/1/-1582

10/2/-1582

10/3/-1582

10/4/-1582

10/5/-1582

10/6/-1582

10/7/-1582

10/8/-1582

10/9/-1582

10/10/-1582

SOTZ

10/11/-1582

10/12/-1582

10/13/-1582

10/14/-1582

10/15/-1582

10/16/-1582

10/17/-1582

10/18/-1582

10/19/-1582

10/20/-1582

10/21/-1582

10/22/-1582

10/23/-1582

10/24/-1582

10/25/-1582

10/26/-1582

10/27/-1582

10/28/-1582

10/29/-1582

10/30/-1582

ZEK

10/31/-1582

11/1/-1582

11/2/-1582

11/3/-1582

11/4/-1582

11/5/-1582

11/6/-1582

11/7/-1582

11/8/-1582

11/9/-1582

11/10/-1582

11/11/-1582

11/12/-1582

11/13/-1582

11/14/-1582

11/15/-1582

11/16/-1582

11/17/-1582

11/18/-1582

11/19/-1582

XUL

11/20/-1582

11/21/-1582

11/22/-1582

11/23/-1582

11/24/-1582

11/25/-1582

11/26/-1582

11/27/-1582

11/28/-1582

11/29/-1582

11/30/-1582

12/1/-1582

12/2/-1582

12/3/-1582

12/4/-1582

12/5/-1582

12/6/-1582

12/7/-1582

12/8/-1582

12/9/-1582

YAXK'IN

12/10/-1582

12/11/-1582

12/12/-1582

12/13/-1582

12/14/-1582

12/15/-1582

12/16/-1582

12/17/-1582

12/18/-1582

12/19/-1582

12/20/-1582

12/21/-1582

12/22/-1582

12/23/-1582

12/24/-1582

12/25/-1582

12/26/-1582

12/27/-1582

12/28/-1582

12/29/-1582

MOL

12/30/-1582

12/31/-1582

1/1/-1581

1/2/-1581

1/3/-1581

1/4/-1581

1/5/-1581

1/6/-1581

1/7/-1581

1/8/-1581

1/9/-1581

1/10/-1581

1/11/-1581

1/12/-1581

1/13/-1581

1/14/-1581

1/15/-1581

1/16/-1581

1/17/-1581

1/18/-1581

CH'EN

1/19/-1581

1/20/-1581

1/21/-1581

1/22/-1581

1/23/-1581

1/24/-1581

1/25/-1581

1/26/-1581

1/27/-1581

1/28/-1581

1/29/-1581

1/30/-1581

1/31/-1581

2/1/-1581

2/2/-1581

2/3/-1581

2/4/-1581

2/5/-1581

2/6/-1581

2/7/-1581

YAX

2/8/-1581

2/9/-1581

2/10/-1581

2/11/-1581

2/12/-1581

2/13/-1581

2/14/-1581

2/15/-1581

2/16/-1581

2/17/-1581

2/18/-1581

2/19/-1581

2/20/-1581

2/21/-1581

2/22/-1581

2/23/-1581

2/24/-1581

2/25/-1581

2/26/-1581

2/27/-1581

SAK

2/28/-1581

2/29/-1581

3/1/-1581

3/2/-1581

3/3/-1581

3/4/-1581

3/5/-1581

3/6/-1581

3/7/-1581

3/8/-1581

3/9/-1581

3/10/-1581

3/11/-1581

3/12/-1581

3/13/-1581

3/14/-1581

3/15/-1581

3/16/-1581

3/17/-1581

3/18/-1581

KEH

3/19/-1581

3/20/-1581

3/21/-1581

3/22/-1581

3/23/-1581

3/24/-1581

3/25/-1581

3/26/-1581

3/27/-1581

3/28/-1581

3/29/-1581

3/30/-1581

3/31/-1581

4/1/-1581

4/2/-1581

4/3/-1581

4/4/-1581

4/5/-1581

4/6/-1581

4/7/-1581

MAK

4/8/-1581

4/9/-1581

4/10/-1581

4/11/-1581

4/12/-1581

4/13/-1581

4/14/-1581

4/15/-1581

4/16/-1581

4/17/-1581

4/18/-1581

4/19/-1581

4/20/-1581

4/21/-1581

4/22/-1581

4/23/-1581

4/24/-1581

4/25/-1581

4/26/-1581

4/27/-1581

K'ANK'IN

4/28/-1581

4/29/-1581

4/30/-1581

5/1/-1581

5/2/-1581

5/3/-1581

5/4/-1581

5/5/-1581

5/6/-1581

5/7/-1581

5/8/-1581

5/9/-1581

5/10/-1581

5/11/-1581

5/12/-1581

5/13/-1581

5/14/-1581

5/15/-1581

5/16/-1581

5/17/-1581

MUWAN

5/18/-1581

5/19/-1581

5/20/-1581

5/21/-1581

5/22/-1581

5/23/-1581

5/24/-1581

5/25/-1581

5/26/-1581

5/27/-1581

5/28/-1581

5/29/-1581

5/30/-1581

5/31/-1581

6/1/-1581

6/2/-1581

6/3/-1581

6/4/-1581

6/5/-1581

6/6/-1581

PAX

6/7/-1581

6/8/-1581

6/9/-1581

6/10/-1581

6/11/-1581

6/12/-1581

6/13/-1581

6/14/-1581

6/15/-1581

6/16/-1581

6/17/-1581

6/18/-1581

6/19/-1581

6/20/-1581

6/21/-1581

6/22/-1581

6/23/-1581

6/24/-1581

6/25/-1581

6/26/-1581

K'AYAB

6/27/-1581

6/28/-1581

6/29/-1581

6/30/-1581

7/1/-1581

7/2/-1581

7/3/-1581

7/4/-1581

7/5/-1581

7/6/-1581

7/7/-1581

7/8/-1581

7/9/-1581

7/10/-1581

7/11/-1581

7/12/-1581

7/13/-1581

7/14/-1581

7/15/-1581

7/16/-1581

KUMK'U

7/17/-1581

7/18/-1581

7/19/-1581

7/20/-1581

7/21/-1581

7/22/-1581

7/23/-1581

7/24/-1581

7/25/-1581

7/26/-1581

7/27/-1581

7/28/-1581

7/29/-1581

7/30/-1581

7/31/-1581

8/1/-1581

8/2/-1581

8/3/-1581

8/4/-1581

8/5/-1581

UAYEB

8/6/-1581

8/7/-1581

8/8/-1581

8/9/-1581

8/10/-1581

Prior to 1582, every year divisible by 4 was a leap year. Since a year contains only 365.242199 days (slightly less than 365.25 days), an error of ten days accumulated over the centuries. To compensate for this error, Pope Gregory XIII (after whom the Gregorian Calendar is named) decreed that the ten days between October 5, 1582 and October 14, 1582 would be eliminated from the calendar. This made October 1582 the shortest month, with only 21 days. After 1582, years divisible by 100 are not leap years unless they are also divisible by 400. Thus, 1900 is not a leap year, but 2000 is.