sdate 0.7 never ending September date

This program wraps the libc locatime() and gmtime() functions to
output the eternal September 1993 date. The epoch month is
configurable (new in version 0.3).

sdate works like fakeroot (on which its code is based) by setting
LD_PRELOAD to a wrapper library.

http://www.catb.org/~esr/jargon/html/S/September-that-never-ended.html
https://www.df7cb.de/projects/sdate