Nerdulator> put something in

Recognised as Decade

1380s

  • 1380-1389
  • 3,653 days
  • 3 leap years
  • 14th century

The 1380s was the decade from 1 January 1380 to 31 December 1389, 3,653 days in total. It contained 3 leap years (1380, 1384, 1388). Counted strictly from year 1 the decade would run 1381 to 1390; this page uses the common reading.

Span of the decade

First day1 January 1380
Last day31 December 1389
Opened on aSaturday
Closed on aThursday
Days in the decade3,653
Weeks in the decade521 and 6 days
Century14th century

The years of the 1380s

1380Leap year, 366 days
1381Common year, 365 days
1382Common year, 365 days
1383Common year, 365 days
1384Leap year, 366 days
1385Common year, 365 days
1386Common year, 365 days
1387Common year, 365 days
1388Leap year, 366 days
1389Common year, 365 days

Leap years

Leap years1380, 1384, 1388
How many3a decade spanning a skipped century leap year has fewer
Common years7

Unix time

Start of the decade-18,618,595,200seconds since 1 January 1970
End of the decade-18,302,976,001the last second of 31 December

Where a decade starts

This page uses1380 to 1389the common reading, grouping years by their shared first three digits
The strict ordinal decade1381 to 1390counting in tens from year 1, the 139th decade runs 1381 to 1390
Which is correctBoth, for different questionsthe first is a naming convention, the second follows from counting; neither is derived from the other

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Neighbouring decades

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “1380s” by Nerdulator’s date engine. Nothing here was retrieved from a database of answers or written by a model.