Recognised as Date
1 April 1290
- Saturday
- Q2
- Common year
- Week 13
- Aries
1 April 1290 falls on a Saturday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 91 of 365 in 1290, falling in week 13 and quarter 2. Its Unix timestamp is -21,450,873,600.
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 year91 of 365
Days remaining in the year274
Days elapsed in the year90
ISO week numberWeek 13ISO 8601, weeks start on Monday
Week of the month1st
Occurrence in the month1st Saturday
QuarterQ2 1290
Year1290
Days in the month30
Leap yearNo, 365 days
This date in other formats
ISO 86011290-04-01
British (D/M/Y)01/04/1290
American (M/D/Y)04/01/1290
Long formSaturday 1st April 1290
RFC 2822Sat, 01 Apr 1290 00:00:00 GMT
Compact12900401
In wordsthe 1st of April, one thousand, two hundred and ninety
Julian calendar equivalent25 March 1290the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew12 Nisan 5050the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)12 Rabi I 689 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)13 Farvardin 669the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die470,889days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-21,450,873,600seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-21,450,873,600,000
Relationship to the epoch248,274 days before the Unix epoch
Julian Day Number2,192,314midnight UTC
Days since 1 January 1900-222,707
Days since 1 January 2000-259,231
Moon phase
PhaseWaxing gibbousthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC96%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC12.7 dayssince the previous new moon
Previous new moon19 March 1290
Next new moon18 April 1290
Previous full moon4 March 1290
Next full moon3 April 1290
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 ago268,989 days
In other terms736 years and 165 days
Weeks38427.0 weeks ago
Anniversary this year171 days ago
Years elapsed736 complete years
Seasons & signs
Zodiac signAriesFire sign
Chinese zodiac yearTigerthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Springmeteorological seasons, by whole months
Season (Southern Hemisphere)Autumn
Easter Sunday that year9 April 1290
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