Recognised as Date
1 March 1091
- Sunday
- Q1
- Common year
- Week 9
- Pisces
1 March 1091 falls on a Sunday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 60 of 365 in 1091, falling in week 9 and quarter 1. Its Unix timestamp is -27,733,449,600.
Calendar position
Day of the weekSundayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month1st
Day of the year60 of 365
Days remaining in the year305
Days elapsed in the year59
ISO week numberWeek 9ISO 8601, weeks start on Monday
Week of the month1st
Occurrence in the month1st Sunday
QuarterQ1 1091
Year1091
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011091-03-01
British (D/M/Y)01/03/1091
American (M/D/Y)03/01/1091
Long formSunday 1st March 1091
RFC 2822Sun, 01 Mar 1091 00:00:00 GMT
Compact10910301
In wordsthe 1st of March, one thousand and ninety-one
Julian calendar equivalent23 February 1091the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew2 Adar II 4851the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)1 Muharram 484 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 Esfand 469the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die398,174days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-27,733,449,600seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-27,733,449,600,000
Relationship to the epoch320,989 days before the Unix epoch
Julian Day Number2,119,599midnight UTC
Days since 1 January 1900-295,422
Days since 1 January 2000-331,946
Moon phase
PhaseWaxing crescentthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC5%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC2.3 dayssince the previous new moon
Previous new moon27 February 1091
Next new moon28 March 1091
Previous full moon12 February 1091
Next full moon14 March 1091
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.
Today20 September 2026
Days ago341,705 days
In other terms935 years, 196 days and 6 hours
Weeks48815.0 weeks ago
Anniversary this year203 days ago
Years elapsed935 complete years
Seasons & signs
Zodiac signPiscesWater sign
Chinese zodiac yearGoatthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Springmeteorological seasons, by whole months
Season (Southern Hemisphere)Autumn
Easter Sunday that year19 April 1091
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