Recognised as Date
1 May 1437
- Monday
- Q2
- Common year
- Week 18
- Taurus
1 May 1437 falls on a Monday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 121 of 365 in 1437, falling in week 18 and quarter 2. Its Unix timestamp is -16,809,465,600.
Calendar position
Day of the weekMondayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month1st
Day of the year121 of 365
Days remaining in the year244
Days elapsed in the year120
ISO week numberWeek 18ISO 8601, weeks start on Monday
Week of the month1st
Occurrence in the month1st Monday
MonthMay (month 5 of 12)
QuarterQ2 1437
Year1437
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011437-05-01
British (D/M/Y)01/05/1437
American (M/D/Y)05/01/1437
Long formMonday 1st May 1437
RFC 2822Mon, 01 May 1437 00:00:00 GMT
Compact14370501
In wordsthe 1st of May, one thousand, four hundred and thirty-seven
Julian calendar equivalent22 April 1437the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew17 Iyyar 5197the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)15 Shawwal 840 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)11 Ordibehesht 816the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die524,609days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-16,809,465,600seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-16,809,465,600,000
Relationship to the epoch194,554 days before the Unix epoch
Julian Day Number2,246,034midnight UTC
Days since 1 January 1900-168,987
Days since 1 January 2000-205,511
Moon phase
PhaseWaning gibbousthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC95%≈to about 1%, by Meeus
Waxing or waningWaning
Moon age at 12:00 UTC16.8 dayssince the previous new moon
Previous new moon14 April 1437
Next new moon14 May 1437
Previous full moon29 April 1437
Next full moon28 May 1437
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 ago215,268 days
In other terms589 years, 135 days and 18 hours
Weeks30752.6 weeks ago
Anniversary this year140 days ago
Years elapsed589 complete years
Seasons & signs
Zodiac signTaurusEarth sign
Chinese zodiac yearSnakethe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Springmeteorological seasons, by whole months
Season (Southern Hemisphere)Autumn
Easter Sunday that year2 April 1437
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