Recognised as Date
1 May 1427
- Tuesday
- Q2
- Common year
- Week 18
- Taurus
1 May 1427 falls on a Tuesday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 121 of 365 in 1427, falling in week 18 and quarter 2. Its Unix timestamp is -17,125,084,800.
Calendar position
Day of the weekTuesdayproleptic 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 Tuesday
MonthMay (month 5 of 12)
QuarterQ2 1427
Year1427
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011427-05-01
British (D/M/Y)01/05/1427
American (M/D/Y)05/01/1427
Long formTuesday 1st May 1427
RFC 2822Tue, 01 May 1427 00:00:00 GMT
Compact14270501
In wordsthe 1st of May, one thousand, four hundred and twenty-seven
Julian calendar equivalent22 April 1427the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew25 Nisan 5187the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)24 Jumada II 830 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 806the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die520,956days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-17,125,084,800seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-17,125,084,800,000
Relationship to the epoch198,207 days before the Unix epoch
Julian Day Number2,242,381midnight UTC
Days since 1 January 1900-172,640
Days since 1 January 2000-209,164
Moon phase
PhaseWaning crescentthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC17%≈to about 1%, by Meeus
Waxing or waningWaning
Moon age at 12:00 UTC25.3 dayssince the previous new moon
Previous new moon6 April 1427
Next new moon5 May 1427
Previous full moon20 April 1427
Next full moon19 May 1427
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 ago218,921 days
In other terms599 years, 136 days and 6 hours
Weeks31274.4 weeks ago
Anniversary this year140 days ago
Years elapsed599 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 year22 April 1427
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