Recognised as Date
1 December 1381
- Saturday
- Q4
- Common year
- Week 48
- Sagittarius
1 December 1381 falls on a Saturday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 335 of 365 in 1381, falling in week 48 and quarter 4. Its Unix timestamp is -18,558,115,200.
Calendar position
Day of the weekSaturdayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month1st
Day of the year335 of 365
Days remaining in the year30
Days elapsed in the year334
ISO week numberWeek 48ISO 8601, weeks start on Monday
Week of the month1st
Occurrence in the month1st Saturday
QuarterQ4 1381
Year1381
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011381-12-01
British (D/M/Y)01/12/1381
American (M/D/Y)12/01/1381
Long formSaturday 1st December 1381
RFC 2822Sat, 01 Dec 1381 00:00:00 GMT
Compact13811201
In wordsthe 1st of December, one thousand, three hundred and eighty-one
Julian calendar equivalent23 November 1381the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew6 Kislev 5142the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)5 Ramadan 783 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 760the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die504,370days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-18,558,115,200seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-18,558,115,200,000
Relationship to the epoch214,793 days before the Unix epoch
Julian Day Number2,225,795midnight UTC
Days since 1 January 1900-189,226
Days since 1 January 2000-225,750
Moon phase
PhaseWaxing crescentthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC37%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC6.7 dayssince the previous new moon
Previous new moon24 November 1381
Next new moon24 December 1381
Previous full moon10 November 1381
Next full moon10 December 1381
Lit side, Northern HemisphereRight
Lit side, Southern HemisphereLeftthe same Moon seen from the other side of the equator; near the equator the lit side points up or down rather than to one side
PrecisionDates onlybefore 1700 or after 2150 the Earth's rotation is not known well enough to give a time, and a phase near midnight can land a day either side
Relative to today
These values depend on today’s date and change daily.
Today19 September 2026
Days ago235,508 days
In other terms644 years and 287 days
Weeks33644.0 weeks ago
Anniversary this yearin 73 days
Years elapsed644 complete years
Seasons & signs
Zodiac signSagittariusFire sign
Chinese zodiac yearRoosterthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Wintermeteorological seasons, by whole months
Season (Southern Hemisphere)Summer
Easter Sunday that year22 April 1381
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