Recognised as Date
1 August 1178
- Tuesday
- Q3
- Common year
- Week 31
- Leo
1 August 1178 falls on a Tuesday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 213 of 365 in 1178, falling in week 31 and quarter 3. Its Unix timestamp is -24,974,784,000.
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 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 Tuesday
QuarterQ3 1178
Year1178
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011178-08-01
British (D/M/Y)01/08/1178
American (M/D/Y)08/01/1178
Long formTuesday 1st August 1178
RFC 2822Tue, 01 Aug 1178 00:00:00 GMT
Compact11780801
In wordsthe 1st of August, one thousand, one hundred and seventy-eight
Julian calendar equivalent25 July 1178the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew9 Av 4938the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)7 Safar 574 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 557the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die430,103days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-24,974,784,000seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-24,974,784,000,000
Relationship to the epoch289,060 days before the Unix epoch
Julian Day Number2,151,528midnight UTC
Days since 1 January 1900-263,493
Days since 1 January 2000-300,017
Moon phase
PhaseWaxing gibbousthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC71%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC8.7 dayssince the previous new moon
Previous new moon23 July 1178
Next new moon22 August 1178
Previous full moon8 July 1178
Next full moon7 August 1178
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.
Today21 September 2026
Days ago309,777 days
In other terms848 years and 45 days
Weeks44253.9 weeks ago
Anniversary this year51 days ago
Years elapsed848 complete years
Seasons & signs
Zodiac signLeoFire 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 year16 April 1178
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