“
This base time of Nov. 17, 1858 has since been used by TOPS-10, TOPS-20, and VAX VMS and OpenVMS. Given this base date, the 100 nanosecond granularity implemented within OpenVMS and the 63-bit absolute time representation […], OpenVMS should have no trouble with time until:
31-JUL-31086 02:48:05.47
At this time, all clocks and time-keeping operations in OpenVMS will suddenly stop, as system time values go negative.
