These abbreviations can be found at universities after time specifications:
- 10 a.m. s.t.: means the event starts at 10 a.m.
- 10 a.m. c.t.: means the event starts at 15 minutes later, i.e. at 10.15 a.m.
s.t.- Latin “sine tempore” = “without time.”
c.t. - Latin “cum tempore” = “with time.”
The so-called “academic quarter-hour.”
