Morocco changes its clocks and puts Microsoft, IBM and Broadcom to work

On Saturday night into Sunday, at 2 a.m., Moroccan clocks were set back by 60 minutes. The kingdom now operates permanently in the UTC+0 time zone, ending the almost-permanent GMT+1 established in 2018.

This decision also changed the rules used by computers, servers and software to automatically calculate the time in Morocco. Publishers therefore had to integrate the new calendar into their products.

Microsoft corrected the data associated with the “Morocco Standard Time (Casablanca)” time zone in Windows 11. An update released since July specifically improves the accuracy of time data concerning Casablanca, according to Microsoft documentation.

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IBM also published several fixes for its AIX operating system. The American group explicitly states that Morocco will return to GMT on September 20, 2026, at 2 a.m. Its updates replace the former Moroccan rules with those from the IANA international time zone database.

Software could have launched tasks at the wrong time

The consequences could be much more visible in certain professional environments. Broadcom issued an alert concerning Dollar Universe, its software for automating and scheduling IT processes.

Older versions of the program continue to anticipate seasonal time changes that will no longer exist in Morocco. This outdated data can distort the conversion between local time and UTC, cause a task to start at the wrong time or trigger false overrun alerts, warns Broadcom.

The problem concerns versions 6.x and 7.x of Dollar Universe when servers use the Africa/Casablanca time zone. Broadcom recommends upgrading to version 7.1.31 or a later version. Companies that cannot immediately carry out this upgrade must monitor their processes and check that their operating system’s time data is up to date.

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These corrections rely on the global time zone database managed by IANA. Its 2026c version, published on July 8, recorded Morocco’s transition to permanent UTC+0 effective September 20 at 2 a.m.

For properly updated computers, phones and servers, the change should occur automatically. The main risks concern older or professional systems that still use an outdated definition of the Africa/Casablanca time zone.