Recognised as Date
18 August 1978
- Friday
- Q3
- Common year
- Week 33
- Leo
18 August 1978 falls on a Friday. It is day 230 of 365 in 1978, falling in week 33 and quarter 3. Its Unix timestamp is 272,246,400. A full moon falls on this day at 10:14 UTC.
Calendar position
Day of the weekFriday
Day of the month18th
Day of the year230 of 365
Days remaining in the year135
Days elapsed in the year229
ISO week numberWeek 33ISO 8601, weeks start on Monday
Week of the month3rd
Occurrence in the month3rd Friday
QuarterQ3 1978
Year1978
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011978-08-18
British (D/M/Y)18/08/1978
American (M/D/Y)08/18/1978
Long formFriday 18th August 1978
RFC 2822Fri, 18 Aug 1978 00:00:00 GMT
Compact19780818
In wordsthe 18th of August, one thousand, nine hundred and seventy-eight
This date in other calendars
Hebrew15 Av 5738the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)14 Ramadan 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)27 Mordad 1357the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die722,314days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp272,246,400seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)272,246,400,000
Relationship to the epoch3,151 days after the Unix epoch
Julian Day Number2,443,739midnight UTC
Days since 1 January 190028,718
Days since 1 January 2000-7,806
Moon phase
PhaseFull moonthe instant falls at 10:14 UTC; in time zones far enough east or west the local date is a day either side
Illuminated at 12:00 UTC100%≈to about 1%, by Meeus
Waxing or waningWaning
Moon age at 12:00 UTC14.5 dayssince the previous new moon
Previous new moon4 August 1978, 01:01 UTC
Next new moon2 September 1978, 16:09 UTC
This full moon18 August 1978, 10:14 UTC
Next full moon16 September 1978, 19:01 UTC
Relative to today
These values depend on today’s date and change daily.
Today19 September 2026
Days ago17,564 days
In other terms48 years and 32 days
Weeks2509.1 weeks ago
Anniversary this year32 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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