Adam Sampson's calendar bookmarkshttps://bookmarks.offog.org/ats/calendarAdam Sampson2014-10-03T15:51:14ZTime, Clock, and Calendar Programming In Chttps://bookmarks.offog.org/edit?url=http%3A%2F%2Fwww.catb.org%2Fesr%2Ftime-programming%2F2014-10-03T15:51:14ZNice explanation of the various historical stages of development of the C time APIs.