Recognised as Date
1 December 1200
- Friday
- Q4
- Leap year
- Week 48
- Sagittarius
1 December 1200 falls on a Friday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 336 of 366 in 1200, a leap year, falling in week 48 and quarter 4. Its Unix timestamp is -24,269,932,800.
Calendar position
Day of the weekFridayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month1st
Day of the year336 of 366
Days remaining in the year30
Days elapsed in the year335
ISO week numberWeek 48ISO 8601, weeks start on Monday
Week of the month1st
Occurrence in the month1st Friday
QuarterQ4 1200
Year1200
Days in the month31
Leap yearYes, 366 days
This date in other formats
ISO 86011200-12-01
British (D/M/Y)01/12/1200
American (M/D/Y)12/01/1200
Long formFriday 1st December 1200
RFC 2822Fri, 01 Dec 1200 00:00:00 GMT
Compact12001201
In wordsthe 1st of December, one thousand, two hundred
Julian calendar equivalent24 November 1200the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew15 Kislev 4961the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)14 Safar 597 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)10 Azar 579the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die438,261days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-24,269,932,800seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-24,269,932,800,000
Relationship to the epoch280,902 days before the Unix epoch
Julian Day Number2,159,686midnight UTC
Days since 1 January 1900-255,335
Days since 1 January 2000-291,859
Relative to today
These values depend on today’s date and change daily.
Today17 September 2026
Days ago301,615 days
In other terms825 years, 283 days and 18 hours
Weeks43087.9 weeks ago
Anniversary this yearin 75 days
Years elapsed825 complete years
Seasons & signs
Zodiac signSagittariusFire sign
Chinese zodiac yearMonkeythe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Wintermeteorological seasons, by whole months
Season (Southern Hemisphere)Summer
Easter Sunday that year9 April 1200
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Adjacent days
The same day in other years
Nerdulate something else
Nothing in mind? Surprise me · today’s page