On Fri 2018-09-14T18:51:12-0700 Paul Eggert hath writ:
I gave that a shot in the attached proposed patch.
+ And even today, some local practices diverge from the Gregorian + calendar with 24-hour days. These divergences range from + relatively minor, such as Japanese bars giving times like "24:30" for the + wee hours of the morning, to more-significant differences such as <a + href="https://www.pri.org/stories/2015-01-30/if-you-have-meeting-ethiopia-you-better-double-check-time">the + east African practice of starting the day at dawn</a>, renumbering + the Western 06:00 to be 12:00. These practices are largely outside + the scope of the <code><abbr>tz</abbr></code> code and data, which + provide only limited support for date and time localization + such as that required by POSIX.
This does not explicitly address the original question that prompted the text. It appears that the common parlance in several equatorial east African regions is to have hour 0 and the change of date at 06:00 according to cell phones that are showing UTC+3. Therefore people who wish their devices to give common time (and date) rather than cell phone time (and date) have already been and can continue to be able to achieve this by setting a device to use UTC-3. The flaw in this scheme is that device vendors may not have allowed that as one of the choices. Is there objection to enhancing the patch text to mention this explicitly? -- Steve Allen <sla@ucolick.org> WGS-84 (GPS) UCO/Lick Observatory--ISB 260 Natural Sciences II, Room 165 Lat +36.99855 1156 High Street Voice: +1 831 459 3046 Lng -122.06015 Santa Cruz, CA 95064 http://www.ucolick.org/~sla/ Hgt +250 m