Microsoft is aware of the upcoming time zone change for the Kingdom of Morocco. Morocco will remain permanently on UTC+01:00, instead of the previous plan of returning to UTC+00:00 on October 28, 2018.
Our official policy statement can be found at http://microsoft.com/time.
Though we plan to release a data update, there is insufficient lead time before this change goes into effect. Therefore, we are offering the following interim guidance as a temporary workaround until such an update can be properly created, tested, distributed, and installed.
Until an update is made available, we recommend our customers temporarily switch to time zone “(UTC+01:00) West central Africa” as soon as possible. Selecting this time zone will reflect the correct current local time, but will not be correct for past events that occurred when Morocco was using UTC+00:00. Therefore, we recommend returning to “(UTC+01:00) Casablanca” after the aforementioned update is applied.