Solved
UK Summer time
UK has now moved to BST [GMT+1hrs] from GMT. Do I need to reschedule the meetings I have already booked [ie move them to 1 hour later] for them to start at the same time in East Africa that remains on EAT?
@ChrisD1 when you book a recurring meeting, the time will stay constant for the host based on their computer time. If you want it to stay the same for a participant in a different timezone (that doesn't follow the same time change rules), you would need to rebook it to match their times.