Recognised as Date
1 October 1180
- Wednesday
- Q4
- Leap year
- Week 40
- Libra
1 October 1180 falls on a Wednesday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 275 of 366 in 1180, a leap year, falling in week 40 and quarter 4. Its Unix timestamp is -24,906,355,200.
Calendar position
Day of the weekWednesdayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month1st
Day of the year275 of 366
Days remaining in the year91
Days elapsed in the year274
ISO week numberWeek 40ISO 8601, weeks start on Monday
Week of the month1st
Occurrence in the month1st Wednesday
QuarterQ4 1180
Year1180
Days in the month31
Leap yearYes, 366 days
This date in other formats
ISO 86011180-10-01
British (D/M/Y)01/10/1180
American (M/D/Y)10/01/1180
Long formWednesday 1st October 1180
RFC 2822Wed, 01 Oct 1180 00:00:00 GMT
Compact11801001
In wordsthe 1st of October, one thousand, one hundred and eighty
Julian calendar equivalent24 September 1180the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew3 Tishri 4941the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)2 Jumada I 576 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 Mehr 559the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die430,895days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-24,906,355,200seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-24,906,355,200,000
Relationship to the epoch288,268 days before the Unix epoch
Julian Day Number2,152,320midnight UTC
Days since 1 January 1900-262,701
Days since 1 January 2000-299,225
Moon phase
PhaseWaxing crescentthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC15%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC3.3 dayssince the previous new moon
Previous new moon28 September 1180
Next new moon27 October 1180
Previous full moon12 September 1180
Next full moon12 October 1180
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.
Today18 September 2026
Days ago308,982 days
In other terms845 years, 345 days and 18 hours
Weeks44140.3 weeks ago
Anniversary this yearin 13 days
Years elapsed845 complete years
Seasons & signs
Zodiac signLibraAir sign
Chinese zodiac yearRatthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Autumnmeteorological seasons, by whole months
Season (Southern Hemisphere)Spring
Easter Sunday that year20 April 1180
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