Recognised as Date
1 May 1138
- Sunday
- Q2
- Common year
- Week 17
- Taurus
1 May 1138 falls on a Sunday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 121 of 365 in 1138, falling in week 17 and quarter 2. Its Unix timestamp is -26,245,036,800.
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 year121 of 365
Days remaining in the year244
Days elapsed in the year120
ISO week numberWeek 17ISO 8601, weeks start on Monday
Week of the month1st
Occurrence in the month1st Sunday
MonthMay (month 5 of 12)
QuarterQ2 1138
Year1138
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011138-05-01
British (D/M/Y)01/05/1138
American (M/D/Y)05/01/1138
Long formSunday 1st May 1138
RFC 2822Sun, 01 May 1138 00:00:00 GMT
Compact11380501
In wordsthe 1st of May, one thousand, one hundred and thirty-eight
Julian calendar equivalent24 April 1138the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew11 Iyyar 4898the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)11 Shaban 532 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 517the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die415,401days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-26,245,036,800seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-26,245,036,800,000
Relationship to the epoch303,762 days before the Unix epoch
Julian Day Number2,136,826midnight UTC
Days since 1 January 1900-278,195
Days since 1 January 2000-314,719
Moon phase
PhaseWaxing gibbousthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC94%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC13.2 dayssince the previous new moon
Previous new moon18 April 1138
Next new moon17 May 1138
Previous full moon4 April 1138
Next full moon3 May 1138
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 ago324,478 days
In other terms888 years and 136 days
Weeks46354.0 weeks ago
Anniversary this year142 days ago
Years elapsed888 complete years
Seasons & signs
Zodiac signTaurusEarth 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 year10 April 1138
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