Thread:Project:Support desk/SMW Result Formats Timeline: Data range 1900 doesn't appear/reply

Depending on how SMW is programmed, there may be issues with dates before Fri, 13 Dec 1901 20:45:54 UTC when using 32 bit php. (Some of MW's core date functions have issues [mostly because php has issues], so it depends on if SMW uses them or not).

p.s. These issues are not present if using 64-bit php. The issue is basically the reverse Year_2038_problem