Not for the task at hand. The initial d was divided down from an unsigned 32-bit...

worstspotgain 3 months ago | parent | context | favorite | on: Big Ball of Mud (1999)

Not for the task at hand. The initial d was divided down from an unsigned 32-bit timestamp in seconds from the Unix epoch (hence the 1970.) It accounts for 2000 (leap) and 2100 (not leap), after which the u32 overflows.