Recognised as Date
31 August 1466
- Friday
- Q3
- Common year
- Week 35
- Virgo
31 August 1466 falls on a Friday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 243 of 365 in 1466, falling in week 35 and quarter 3. Its Unix timestamp is -15,883,776,000.
Calendar position
Day of the weekFridayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month31st
Day of the year243 of 365
Days remaining in the year122
Days elapsed in the year242
ISO week numberWeek 35ISO 8601, weeks start on Monday
Week of the month5th
Occurrence in the month5th Friday, and the last of the month
QuarterQ3 1466
Year1466
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011466-08-31
British (D/M/Y)31/08/1466
American (M/D/Y)08/31/1466
Long formFriday 31st August 1466
RFC 2822Fri, 31 Aug 1466 00:00:00 GMT
Compact14660831
In wordsthe 31st of August, one thousand, four hundred and sixty-six
Julian calendar equivalent22 August 1466the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew10 Elul 5226the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)10 Muharram 871 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 Shahrivar 845the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die535,323days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-15,883,776,000seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-15,883,776,000,000
Relationship to the epoch183,840 days before the Unix epoch
Julian Day Number2,256,748midnight UTC
Days since 1 January 1900-158,273
Days since 1 January 2000-194,797
Moon phase
PhaseWaxing gibbousthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC84%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC11.5 dayssince the previous new moon
Previous new moon20 August 1466
Next new moon18 September 1466
Previous full moon5 August 1466
Next full moon3 September 1466
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.
Today19 September 2026
Days ago204,555 days
In other terms560 years and 15 days
Weeks29222.1 weeks ago
Anniversary this year19 days ago
Years elapsed560 complete years
Seasons & signs
Zodiac signVirgoEarth sign
Chinese zodiac yearDogthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Summermeteorological seasons, by whole months
Season (Southern Hemisphere)Winter
Easter Sunday that year15 April 1466
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