<html><body style="font-family: Helvetica,Arial,sans-serif; font-size: 12px;"><br><span style="color:rgb(51,51,51);">> When does the date change? In the middle of the night or around dawn?</span><br><div><br></div><div>The new day begins when the hour strikes 6:00 AM EAT, or 12:00 local time. From my preliminary research, the same method of conveying date and time is used in Ethiopia, Kenya, and Somalia, but not Somaliland and Djibouti.</div><div><br></div><div>> <span style="color:rgb(51,51,51);">Then, if we say Ethiopia is UTC-3, then clocks that automatically follow tz database would be shifted 6 hours, and thus when local people say it is 6 o'clock in local languages, the clock would display as </span><span style="color:rgb(51,51,51);font-family:sans-serif;">🕕 instead. However it would seems like it would confuse people, as according to the description, people who use watches and speak local language in that part of the world are still setting their clock to the UTC+3 timezone.</span></div><div><span style="color:#333333;font-family:sans-serif;"><br></span></div><div><span style="color:#333333;font-family:sans-serif;">I believe the locals do this to conform to the international standard and the lack of formal recognition of the local system for tracking the transition of days and time. I am not sure about other countries, but in Ethiopia, this system is not just a colloquial detail, but a working system that is poorly managed by software. I think the likelihood of a localization pack addressing this for multiple software products is highly unlikely. </span></div><div><span style="color:#333333;font-family:sans-serif;"><br></span></div><div><span style="color:#333333;font-family:sans-serif;">> </span><span style="color:rgb(51,51,51);"> As opposed to the division AM/PM, there are time periods that need to be used ( see </span><a href="https://unicode.org/cldr/trac/ticket/8473" style="color:rgb(170,170,170);">https://unicode.org/cldr/trac/ticket/8473</a><span style="color:rgb(51,51,51);"> ) such as "</span><span style="background-color:rgb(255,255,254);font-family:Arial, Geneva, sans-serif;font-size:13px;">ከሰዓት - afternoon - 6:01 to 11:59 Ethiopic = 12:01 to 17:59 Gregorian" which need to be calculated based on local timezone-adjusted time. If the time zone were skewed by 6 hours then the period would be off.</span></div><div><span style="font-family:Arial, Geneva, sans-serif;"><span style="font-size:13px;"><br></span></span></div><div><span style="font-family:Arial, Geneva, sans-serif;"><span style="font-size:13px;">An AM/PM designation would still work in that it is straight forward and would get adopted as a compromise. I will contact the Ministry of Science and Technology to get their thoughts on the subject.</span></span></div><div><span style="font-family:Arial, Geneva, sans-serif;"><span style="font-size:13px;"><br></span></span></div><div><span style="font-family:Arial, Geneva, sans-serif;"><span style="font-size:13px;">Regards,</span></span></div><div><span style="font-family:Arial, Geneva, sans-serif;"><span style="font-size:13px;">Khalid</span></span></div><div><span style="font-family:Arial, Geneva, sans-serif;"><span style="font-size:13px;"><br></span></span><blockquote class="atmailquote"><br>----- Original Message -----<br><div id="origionalMessageFromField" style="width:100%;display:inline;background:rgb(228,228,228);"><div style="display:inline;font-weight:bold;">From:</div> "Steve Allen" <sla@ucolick.org></div><br><br><br>
On Wed 2018-09-12T16:20:53-0700 Guy Harris hath writ:<br>
> int tm_hour; /* hours since midnight — [0 23] */<br><br>
> This means that tm_hour has to be 0 at midnight<br><br>
I think this means that the hour has to be 0 when the calendar date changes.<br><br>
The meaning is the number of hours since the change of the calendar<br>
date, and in the usage prescribed by the 1884 International Meridian<br>
Conference that has been midnight. If the Ethiopian common use of<br>
time and date has the calendar change at sunrise or sunset then the<br>
POSIX requirements are satisfied.<br><br>
--<br>
Steve Allen <sla@ucolick.org> WGS-84 (GPS)<br>
UCO/Lick Observatory--ISB 260 Natural Sciences II, Room 165 Lat +36.99855<br>
1156 High Street Voice: +1 831 459 3046 Lng -122.06015<br>
Santa Cruz, CA 95064 http://www.ucolick.org/~sla/ Hgt +250 m<br><br></blockquote></div></body></html>