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Recognised as Decade

1520s

  • 1520-1529
  • 3,653 days
  • 3 leap years
  • 16th century

The 1520s was the decade from 1 January 1520 to 31 December 1529, 3,653 days in total. It contained 3 leap years (1520, 1524, 1528). Counted strictly from year 1 the decade would run 1521 to 1530; this page uses the common reading.

Span of the decade

First day1 January 1520
Last day31 December 1529
Opened on aThursday
Closed on aTuesday
Days in the decade3,653
Weeks in the decade521 and 6 days
Century16th century

The years of the 1520s

1520Leap year, 366 days
1521Common year, 365 days
1522Common year, 365 days
1523Common year, 365 days
1524Leap year, 366 days
1525Common year, 365 days
1526Common year, 365 days
1527Common year, 365 days
1528Leap year, 366 days
1529Common year, 365 days

Leap years

Leap years1520, 1524, 1528
How many3a decade spanning a skipped century leap year has fewer
Common years7

Unix time

Start of the decade-14,200,704,000seconds since 1 January 1970
End of the decade-13,885,084,801the last second of 31 December

Where a decade starts

This page uses1520 to 1529the common reading, grouping years by their shared first three digits
The strict ordinal decade1521 to 1530counting in tens from year 1, the 153rd decade runs 1521 to 1530
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 “1520s” by Nerdulator’s date engine. Nothing here was retrieved from a database of answers or written by a model.