Recognised as Date
1 April 1090
- Tuesday
- Q2
- Common year
- Week 14
- Aries
1 April 1090 falls on a Tuesday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 91 of 365 in 1090, falling in week 14 and quarter 2. Its Unix timestamp is -27,762,307,200.
Calendar position
Day of the weekTuesdayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month1st
Day of the year91 of 365
Days remaining in the year274
Days elapsed in the year90
ISO week numberWeek 14ISO 8601, weeks start on Monday
Week of the month1st
Occurrence in the month1st Tuesday
QuarterQ2 1090
Year1090
Days in the month30
Leap yearNo, 365 days
This date in other formats
ISO 86011090-04-01
British (D/M/Y)01/04/1090
American (M/D/Y)04/01/1090
Long formTuesday 1st April 1090
RFC 2822Tue, 01 Apr 1090 00:00:00 GMT
Compact10900401
In wordsthe 1st of April, one thousand and ninety
Julian calendar equivalent26 March 1090the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew22 Nisan 4850the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)21 Muharram 483 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)12 Farvardin 469the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die397,840days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-27,762,307,200seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-27,762,307,200,000
Relationship to the epoch321,323 days before the Unix epoch
Julian Day Number2,119,265midnight UTC
Days since 1 January 1900-295,756
Days since 1 January 2000-332,280
Moon phase
PhaseWaning crescentthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC43%≈to about 1%, by Meeus
Waxing or waningWaning
Moon age at 12:00 UTC22.3 dayssince the previous new moon
Previous new moon10 March 1090
Next new moon8 April 1090
Previous full moon24 March 1090
Next full moon22 April 1090
Lit side, Northern HemisphereLeft
Lit side, Southern HemisphereRightthe 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.
Today18 September 2026
Days ago342,037 days
In other terms936 years and 163 days
Weeks48862.4 weeks ago
Anniversary this year170 days ago
Years elapsed936 complete years
Seasons & signs
Zodiac signAriesFire sign
Chinese zodiac yearHorsethe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Springmeteorological seasons, by whole months
Season (Southern Hemisphere)Autumn
Easter Sunday that year30 March 1090
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