[1] ISO C 201X Proposal: Timezone Functions, David R. Tribble, 2022-07-13T08:35:00.000Z, 2011-11-10T01:48:07.228Z https://web.archive.org/web/20111110014755/http://david.tribble.com/text/c0xtimezone.html

[2] Modernized <time.h> API for ISO C, 2022-07-13T08:35:39.000Z, 2011-10-08T00:58:52.480Z https://web.archive.org/web/20111008005804/http://www.cl.cam.ac.uk/~mgk25/time/c/