![]() This time zone is mainly observed by 15 African countries, located mainly in the tropical region. West Africa Time (WAT) is one hour ahead of UTC (UTC+1), making it the same as Western European Sumer Time (WEST) during summer and Central European Time (CET) in winter. Morocco uses WET in winter and Western European Standard Time in the summer. Greenwich Mean Time is observed by West African countries, including Nigeria, Ghana, Ivory Coast, Burkina Faso, Senegal, Liberia, and Togo. These three time zones do not have offset time from the UTC, meaning they are not ahead or behind the UTC. The Greenwich Mean Time (GMT/UTC) is also observed as Western Sahara Time Zone (WST) and corresponds to Western European Time Zone (WET). Other time zones with similar offset as CVT are East Greenland Time and November Time Zone. This time zone is one hour behind the Coordinated Universal Time (UTC-1). Cape Verde Time ZoneĬape Verde Time (CVT) is a time zone observed only in Cape Verde, an Atlantic island off Africa’s west coast. ![]() The different shades of color represent the different time zone areas. No African country observes Daylight Saving Time except Morocco. The six African time zones are Mauritius and Seychelles Time (UTC/GMT+4), East Africa Time (UTC/GMT+3), Central Africa Time (UTC/GMT+2), West Africa Time (UTC/GMT+1), Greenwich Mean Time (UTC/GMT), and Cape Verde Time (UTC-1). However, it uses 13 names to describe its standard time zones. Africa observes six standard time zones, having an offset range of between UTC-1 and UTC+4. It is bordered to the north by Europe and Asia, collectively known as Eurasia, and uses some time zones used in Europe. If you are going to do manual shifts rather than using your timezone database, at least use TZ=WET0 and TZ=WEST-1 so date will correctly show the Western European Time and Western European Summer Time abbreviations for current times.Africa is the world’s second-largest continent, after Asia, spanning 30.4 million km 2. If you haven't been installing updates to Solaris 10 from Oracle and you haven't manually updated your timezone database from the timezone database creators, I won't try to predict what will happen when daylight savings time shifts occur. (This also means that if you still choose to perform manual shifts to TZ, you need to reset TZ and reboot your system at exactly the times when when the daylight shifts occur.) (The TZ setting also affects the display of dates in other utilities like ls -l output and the ways dates and times are calculated by the touch utility.) Using any TZ rule that ignores the daylight savings time shifts will always incorrectly display a timestamps set during the opposite setting. ![]() The difference between TZ=GMT-1 and TZ=GMT+1 is two hours and neither of them will correctly show the timestamps on files both before and after the switch to or from daylignt savings times. I don't have access to a Solaris 10 system and won't try to predict what TZ=:GMT+1 or TZ=:Etc/GMT-1 will do. TZ=GMT-1 will interpret ALL times it encounters as 1 hour ahead of Greenwich and TZ=GMT+1 will interpret ALL times as 1 hour behind Greenwich time. The whole idea behind having a database for Casablanca is that it should know the daylights savings time changes that have occurred at least since 1970 (and if you keep the database up-to-date) will also know about the most recent daylight savings start and stop time rules put in place by the Moroccan government (including the fact that daylight savings time is suspended during Ramadan in Morocco so Morocco has 4 timezone shifts per year while most of the United States and Europe have 2 timezone shifts per year). You should not change TZ=Africa/Casablanca to anything else.
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