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\<bookmark_value\>years; 2-digits\</bookmark_value\>\<bookmark_value\>dates; 19xx/20xx\</bookmark_value\>

# 19xx/20xx Years

The year in a date entry is often entered as two digits. Internally, the year is managed by LibreOffice as four digits, so that in the calculation of the difference from 1/1/99 to 1/1/01, the result will correctly be two years.

- Under LibreOffice - PreferencesTools - Options - LibreOffice - General you can define the century that is used when you enter a year with only two digits. The default is 1930 to 2029.

This means that if you enter a date of 1/1/30 or higher, it will be treated internally as 1/1/1930 or higher. All lower two-digit years apply to the 20xx century. So, for example, 1/1/20 is converted into 1/1/2020.

Related Topics

Calculating With Dates and Times