Recognised as Date
1 August 1309
- Thursday
- Q3
- Common year
- Week 31
- Leo
1 August 1309 falls on a Thursday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 213 of 365 in 1309, falling in week 31 and quarter 3. Its Unix timestamp is -20,840,803,200.
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 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 Thursday
QuarterQ3 1309
Year1309
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011309-08-01
British (D/M/Y)01/08/1309
American (M/D/Y)08/01/1309
Long formThursday 1st August 1309
RFC 2822Thu, 01 Aug 1309 00:00:00 GMT
Compact13090801
In wordsthe 1st of August, one thousand, three hundred and nine
Julian calendar equivalent24 July 1309the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew16 Av 5069the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)14 Safar 709 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 Mordad 688the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die477,950days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-20,840,803,200seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-20,840,803,200,000
Relationship to the epoch241,213 days before the Unix epoch
Julian Day Number2,199,375midnight UTC
Days since 1 January 1900-215,646
Days since 1 January 2000-252,170
Moon phase
PhaseWaning gibbousthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC99%≈to about 1%, by Meeus
Waxing or waningWaning
Moon age at 12:00 UTC16.5 dayssince the previous new moon
Previous new moon16 July 1309
Next new moon14 August 1309
Previous full moon31 July 1309
Next full moon29 August 1309
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 ago261,929 days
In other terms717 years, 44 days and 18 hours
Weeks37418.4 weeks ago
Anniversary this year50 days ago
Years elapsed717 complete years
Seasons & signs
Zodiac signLeoFire sign
Chinese zodiac yearRoosterthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Summermeteorological seasons, by whole months
Season (Southern Hemisphere)Winter
Easter Sunday that year7 April 1309
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