Year 2000 Convention

The clock command now implements the following standard convention for two-digit year names:

70–99 map to 1970–1999.

00–69 map to 2000–2069.

Actually, the ability to parse a date value after 2037 and before 1903 may be limited on your system by the size of an integer (e.g., 32-bits) and the clock epoch, which is January 1, 1970 on Windows and most UNIX systems.