Recognised as Date
1 August 1051
- Friday
- Q3
- Common year
- Week 31
- Leo
1 August 1051 falls on a Friday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 213 of 365 in 1051, falling in week 31 and quarter 3. Its Unix timestamp is -28,982,534,400. A full moon falls on this day.
Calendar position
Day of the weekFridayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month1st
Day of the year213 of 365
Days remaining in the year152
Days elapsed in the year212
ISO week numberWeek 31ISO 8601, weeks start on Monday
Week of the month1st
Occurrence in the month1st Friday
QuarterQ3 1051
Year1051
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011051-08-01
British (D/M/Y)01/08/1051
American (M/D/Y)08/01/1051
Long formFriday 1st August 1051
RFC 2822Fri, 01 Aug 1051 00:00:00 GMT
Compact10510801
In wordsthe 1st of August, one thousand and fifty-one
Julian calendar equivalent26 July 1051the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew15 Av 4811the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)14 Rabi I 443 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)9 Mordad 430the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die383,717days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-28,982,534,400seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-28,982,534,400,000
Relationship to the epoch335,446 days before the Unix epoch
Julian Day Number2,105,142midnight UTC
Days since 1 January 1900-309,879
Days since 1 January 2000-346,403
Moon phase
PhaseFull moonthe instant falls on this UTC day; in time zones far enough east or west the local date is a day either side
Illuminated at 12:00 UTC100%≈to about 1%, by Meeus
Waxing or waningWaning
Moon age at 12:00 UTC15.7 dayssince the previous new moon
Previous new moon16 July 1051
Next new moon15 August 1051
This full moon1 August 1051
Next full moon30 August 1051
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.
Today21 September 2026
Days ago356,163 days
In other terms975 years, 44 days and 6 hours
Weeks50880.4 weeks ago
Anniversary this year51 days ago
Years elapsed975 complete years
Seasons & signs
Zodiac signLeoFire sign
Chinese zodiac yearRabbitthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Summermeteorological seasons, by whole months
Season (Southern Hemisphere)Winter
Easter Sunday that year6 April 1051
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