The Year 2000 problem, also known as the Y2K problem, the Millennium bug, the Y2K bug, or Y2K, is a class of computer bugs related to the formatting and storage of calendar data for dates beginning in the year 2000. Problems were anticipated, and arose, because many programs represented four-digit years with only the final two digits making the year 2000 indistinguishable from 1900. The assumption of a twentieth-century date in such programs could cause various errors, such as the incorrect display of dates and the inaccurate ordering of automated dated records or real-time events.
on january 19 2038, all 32-bit systems will reset to 1/1/1901 due to the binary timestamp resetting to 0(overflowing the binary limit of 32 bit systems). the unix time of 32 bit systems will be set to 1/1/1901 even though the unix timestamp started on 1/1/1970 because the timestamp will be negative and be 69 years before instead of after, thus making it 1/1/1901 instead of 1/1/1970
If the new version of SMF doesn't support the classic original forum theme, I'm going to be so fucking god damn angry in the most mild and reasonable way imaginable.