Recognised as Date
1 May 1439
- Wednesday
- Q2
- Common year
- Week 18
- Taurus
1 May 1439 falls on a Wednesday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 121 of 365 in 1439, falling in week 18 and quarter 2. Its Unix timestamp is -16,746,393,600.
Calendar position
Day of the weekWednesdayproleptic 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 Wednesday
MonthMay (month 5 of 12)
QuarterQ2 1439
Year1439
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011439-05-01
British (D/M/Y)01/05/1439
American (M/D/Y)05/01/1439
Long formWednesday 1st May 1439
RFC 2822Wed, 01 May 1439 00:00:00 GMT
Compact14390501
In wordsthe 1st of May, one thousand, four hundred and thirty-nine
Julian calendar equivalent22 April 1439the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew7 Iyyar 5199the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)8 Dhu al-Qidah 842 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 Ordibehesht 818the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die525,339days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-16,746,393,600seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-16,746,393,600,000
Relationship to the epoch193,824 days before the Unix epoch
Julian Day Number2,246,764midnight UTC
Days since 1 January 1900-168,257
Days since 1 January 2000-204,781
Moon phase
PhaseWaxing gibbousthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC60%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC8.8 dayssince the previous new moon
Previous new moon22 April 1439
Next new moon22 May 1439
Previous full moon8 April 1439
Next full moon8 May 1439
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.
Today17 September 2026
Days ago214,537 days
In other terms587 years, 135 days and 6 hours
Weeks30648.1 weeks ago
Anniversary this year139 days ago
Years elapsed587 complete years
Seasons & signs
Zodiac signTaurusEarth 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 year14 April 1439
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