Recognised as Date
15 August 1980
- Friday
- Q3
- Leap year
- Week 33
- Leo
15 August 1980 falls on a Friday. It is day 228 of 366 in 1980, a leap year, falling in week 33 and quarter 3. Its Unix timestamp is 335,145,600.
Calendar position
Day of the weekFriday
Day of the month15th
Day of the year228 of 366
Days remaining in the year138
Days elapsed in the year227
ISO week numberWeek 33ISO 8601, weeks start on Monday
Week of the month3rd
Occurrence in the month3rd Friday
QuarterQ3 1980
Year1980
Days in the month31
Leap yearYes, 366 days
This date in other formats
ISO 86011980-08-15
British (D/M/Y)15/08/1980
American (M/D/Y)08/15/1980
Long formFriday 15th August 1980
RFC 2822Fri, 15 Aug 1980 00:00:00 GMT
Compact19800815
In wordsthe 15th of August, one thousand, nine hundred and eighty
This date in other calendars
Hebrew3 Elul 5740the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)3 Shawwal 1400 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)24 Mordad 1359the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die723,042days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp335,145,600seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)335,145,600,000
Relationship to the epoch3,879 days after the Unix epoch
Julian Day Number2,444,467midnight UTC
Days since 1 January 190029,446
Days since 1 January 2000-7,078
Moon phase
PhaseWaxing crescentthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC20%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC4.7 dayssince the previous new moon
Previous new moon10 August 1980, 19:09 UTC
Next new moon9 September 1980, 10:00 UTC
Previous full moon27 July 1980, 18:54 UTC
Next full moon26 August 1980, 03:42 UTC
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
Relative to today
These values depend on today’s date and change daily.
Today20 September 2026
Days ago16,837 days
In other terms46 years, 35 days and 12 hours
Weeks2405.3 weeks ago
Anniversary this year36 days ago
Years elapsed46 complete years
Seasons & signs
Zodiac signLeoFire sign
Chinese zodiac yearMonkeythe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Summermeteorological seasons, by whole months
Season (Southern Hemisphere)Winter
Easter Sunday that year6 April 1980
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