Time Difference Between Cairo and London

For most of the year Cairo is two hours ahead of London, and that is the number people memorize. It is right when both cities are on standard time and when both are on daylight time. 9 AM in London is 11 AM in Cairo. The shared day is generous. The number is wrong for a stretch of weeks every spring, and for a few days every October, because the two cities do not change clocks on the same rule. Open the schedule on this page before you freeze a series that has to survive April or October.

London springs forward on the last Sunday of March. Cairo waits until the last Friday of April. Between those two dates London is already on summer time and Cairo is not, and the gap falls to one hour: 9 AM in London is 10 AM in Cairo. In October both switch, London on the last Sunday and Cairo on the last Friday, and those two Fridays and Sundays do not keep a stable order from one year to the next. Some years Cairo is briefly three hours ahead. Some years the gap dips to one hour instead. The schedule on this page is the list for the year you are booking. A note that promised one October pattern would be lying half the time.

The flight is about five hours. Two hours of clock change, or one, or three for a few days, is a same-week adjustment. Ramadan is the larger scheduling fact, and it is not on this clock table. Some Cairo government offices and companies shorten the day for the month, and the month moves. A London team that locks a 4 PM standing call will find the Cairo side already gone in a Ramadan afternoon and perfectly available the same hour a month later. Ask, for that year, rather than encoding it into the invite.