Recognised as Date
31 July 1978
- Monday
- Q3
- Common year
- Week 31
- Leo
31 July 1978 falls on a Monday. It is day 212 of 365 in 1978, falling in week 31 and quarter 3. Its Unix timestamp is 270,691,200.
Calendar position
Day of the weekMonday
Day of the month31st
Day of the year212 of 365
Days remaining in the year153
Days elapsed in the year211
ISO week numberWeek 31ISO 8601, weeks start on Monday
Week of the month5th
Occurrence in the month5th Monday, and the last of the month
MonthJuly (month 7 of 12)
QuarterQ3 1978
Year1978
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011978-07-31
British (D/M/Y)31/07/1978
American (M/D/Y)07/31/1978
Long formMonday 31st July 1978
RFC 2822Mon, 31 Jul 1978 00:00:00 GMT
Compact19780731
In wordsthe 31st of July, one thousand, nine hundred and seventy-eight
This date in other calendars
Hebrew26 Tammuz 5738the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)25 Shaban 1398 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 1357the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die722,296days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp270,691,200seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)270,691,200,000
Relationship to the epoch3,133 days after the Unix epoch
Julian Day Number2,443,721midnight UTC
Days since 1 January 190028,700
Days since 1 January 2000-7,824
Moon phase
PhaseWaning crescentthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC11%≈to about 1%, by Meeus
Waxing or waningWaning
Moon age at 12:00 UTC26.1 dayssince the previous new moon
Previous new moon5 July 1978, 09:50 UTC
Next new moon4 August 1978, 01:01 UTC
Previous full moon20 July 1978, 03:05 UTC
Next full moon18 August 1978, 10:14 UTC
Lit side, Northern HemisphereLeft
Lit side, Southern HemisphereRightthe 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
Relative to today
These values depend on today’s date and change daily.
Today18 September 2026
Days ago17,581 days
In other terms48 years and 49 days
Weeks2511.6 weeks ago
Anniversary this year49 days ago
Years elapsed48 complete years
Seasons & signs
Zodiac signLeoFire sign
Chinese zodiac yearHorsethe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Summermeteorological seasons, by whole months
Season (Southern Hemisphere)Winter
Easter Sunday that year26 March 1978
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