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Decade

1080s

  • 1080-1089
  • 3,653 days
  • 3 leap years
  • 11th century

The 1080s was the decade from 1 January 1080 to 31 December 1089, 3,653 days in total. It contained 3 leap years (1080, 1084, 1088). Counted strictly from year 1 the decade would run 1081 to 1090; this page uses the common reading.

Span of the decade

First day1 January 1080
Last day31 December 1089
Opened on aThursday
Closed on aTuesday
Days in the decade3,653
Weeks in the decade521 and 6 days
Century11th century

The years of the 1080s

1080Leap year, 366 days
1081Common year, 365 days
1082Common year, 365 days
1083Common year, 365 days
1084Leap year, 366 days
1085Common year, 365 days
1086Common year, 365 days
1087Common year, 365 days
1088Leap year, 366 days
1089Common year, 365 days

Leap years

Leap years1080, 1084, 1088
How many3a decade spanning a skipped century leap year has fewer
Common years7

Unix time

Start of the decade-28,085,702,400seconds since 1 January 1970
End of the decade-27,770,083,201the last second of 31 December

Where a decade starts

This page uses1080 to 1089the common reading, grouping years by their shared first three digits
The strict ordinal decade1081 to 1090counting in tens from year 1, the 109th decade runs 1081 to 1090
Which is correctBoth, for different questionsthe first is a naming convention, the second follows from counting; neither is derived from the other

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Every value on this page was computed from “1080s” by Nerdulator’s date engine. Nothing here was retrieved from a database of answers or written by a model.