Recognised as Date
1 September 1678
- Thursday
- Q3
- Common year
- Week 35
- Virgo
1 September 1678 falls on a Thursday. It is day 244 of 365 in 1678, falling in week 35 and quarter 3. Its Unix timestamp is -9,193,564,800. A full moon falls on this day.
Calendar position
Day of the weekThursday
Day of the month1st
Day of the year244 of 365
Days remaining in the year121
Days elapsed in the year243
ISO week numberWeek 35ISO 8601, weeks start on Monday
Week of the month1st
Occurrence in the month1st Thursday
QuarterQ3 1678
Year1678
Days in the month30
Leap yearNo, 365 days
This date in other formats
ISO 86011678-09-01
British (D/M/Y)01/09/1678
American (M/D/Y)09/01/1678
Long formThursday 1st September 1678
RFC 2822Thu, 01 Sep 1678 00:00:00 GMT
Compact16780901
In wordsthe 1st of September, one thousand, six hundred and seventy-eight
This date in other calendars
Hebrew14 Elul 5438the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)14 Rajab 1089 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)11 Shahrivar 1057the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die612,756days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-9,193,564,800seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-9,193,564,800,000
Relationship to the epoch106,407 days before the Unix epoch
Julian Day Number2,334,181midnight UTC
Days since 1 January 1900-80,840
Days since 1 January 2000-117,364
Moon phase
PhaseFull moonthe instant falls on this UTC day; 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 UTC15.1 dayssince the previous new moon
Previous new moon17 August 1678
Next new moon16 September 1678
This full moon1 September 1678
Next full moon30 September 1678
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.
Today19 September 2026
Days ago127,122 days
In other terms348 years and 15 days
Weeks18160.3 weeks ago
Anniversary this year18 days ago
Years elapsed348 complete years
Seasons & signs
Zodiac signVirgoEarth sign
Chinese zodiac yearHorsethe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Autumnmeteorological seasons, by whole months
Season (Southern Hemisphere)Spring
Easter Sunday that year10 April 1678
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