The hours you are both awake, a good time to ring, and how the gap moves through the year. Worked out from the time-zone database.
Right now
Choose both places to see the hours.
Waking hours
We assume people are up from 7:00 to 22:00, and that 9:00 to 21:00 is a fair time for a call. Change it if they keep other hours.
About this pair
Saudi Arabia keeps one time all year. Egypt has summer time again, so for part of the year the two show the same time and for the rest Cairo is behind.
Egypt’s clock change dates are set by its government and have changed before. The dates below come from the time-zone database; check the news near the end of April and October.
Written by The Sunli team.
Through the year
We assume you are up from 7:00 to 22:00 and that 9:00 to 21:00 is a fair time for them to take a call. Change the hours in the tool above if they keep others.
14 November 2026 to 30 April 2027
Cairo is 1 hour behind Riyadh.
Good time to ring: 10:00 to 22:00, your time (9:00 to 21:00 in Cairo).
30 April 2027 to 29 October 2027
Cairo keeps the same time as Riyadh.
Good time to ring: 9:00 to 21:00, your time (9:00 to 21:00 in Cairo).
29 October 2027 to 31 December 2027
Cairo is 1 hour behind Riyadh.
Good time to ring: 10:00 to 22:00, your time (9:00 to 21:00 in Cairo).
When the clocks change
Cairo: clocks go forward 1 hour on Friday 30 April 2027, at 0:00 local time.
Cairo: clocks go back 1 hour on Friday 29 October 2027, at 0:00 local time.
Riyadh does not change its clocks in this period.
Riyadh last changed its clocks on 14 March 1947.
Time zones: Riyadh uses Asia/Riyadh and Cairo uses Africa/Cairo in the IANA time-zone database, version 2026f. Dates are worked out from it; a government can change its clocks at short notice.
