Recognised as Date
1 May 1388
- Thursday
- Q2
- Leap year
- Week 18
- Taurus
1 May 1388 falls on a Thursday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 122 of 366 in 1388, a leap year, falling in week 18 and quarter 2. Its Unix timestamp is -18,355,680,000.
Calendar position
Day of the weekThursdayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month1st
Day of the year122 of 366
Days remaining in the year244
Days elapsed in the year121
ISO week numberWeek 18ISO 8601, weeks start on Monday
Week of the month1st
Occurrence in the month1st Thursday
MonthMay (month 5 of 12)
QuarterQ2 1388
Year1388
Days in the month31
Leap yearYes, 366 days
This date in other formats
ISO 86011388-05-01
British (D/M/Y)01/05/1388
American (M/D/Y)05/01/1388
Long formThursday 1st May 1388
RFC 2822Thu, 01 May 1388 00:00:00 GMT
Compact13880501
In wordsthe 1st of May, one thousand, three hundred and eighty-eight
Julian calendar equivalent23 April 1388the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew15 Iyyar 5148the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)15 Rabi II 790 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 Ordibehesht 767the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die506,713days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-18,355,680,000seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-18,355,680,000,000
Relationship to the epoch212,450 days before the Unix epoch
Julian Day Number2,228,138midnight UTC
Days since 1 January 1900-186,883
Days since 1 January 2000-223,407
Moon phase
PhaseWaning gibbousthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC98%≈to about 1%, by Meeus
Waxing or waningWaning
Moon age at 12:00 UTC16.1 dayssince the previous new moon
Previous new moon15 April 1388
Next new moon14 May 1388
Previous full moon30 April 1388
Next full moon29 May 1388
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 ago233,165 days
In other terms638 years, 135 days and 12 hours
Weeks33309.3 weeks ago
Anniversary this year141 days ago
Years elapsed638 complete years
Seasons & signs
Zodiac signTaurusEarth sign
Chinese zodiac yearDragonthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Springmeteorological seasons, by whole months
Season (Southern Hemisphere)Autumn
Easter Sunday that year6 April 1388
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Adjacent days
The same day in other years
Nerdulate something else
Nothing in mind? Surprise me · today’s page