I think I can revert this and not use the almost_same_datetime method, but it does have a purpose; so, I'd like to hear opinions. I originally added it b/c I was defaulting the start time of courses to now(UTC) which has mins, secs, msecs, but the subsection start was truncating the time and thus giving false positives on whether the setting had changed. It's innocuous but possibly confusing as is.