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Time zone overlap calculator: shared hours, weekends, Ramadan
The Timezone Overlap Planner is Remote Pro Ai's free time zone overlap calculator. Add 2 or more cities, set working hours, and see a day-by-day heatmap of shared hours that accounts for daylight saving, Friday–Saturday versus Saturday–Sunday weekends and Ramadan schedules. Cairo, for example, sits 0–1 hour from Riyadh and Central European Time.
Fig. 01Timezone Overlap Planner
- 122role profiles
- 9practices
- 72hfree hold
- 4working days to start
Time zone overlap calculator results, hour by hour
8
8 shared hours per working day · core window 09:00–17:00 (Berlin, GMT+2)
8 shared hours per working day · core window 09:00–17:00 (Berlin, GMT+2)
- All locations working
- Some working
- None working
- Berlin ↔ Riyadh: 8h per day
- Berlin ↔ Cairo: 8h per day
- Riyadh ↔ Cairo: 9h per day
Egypt observes daylight saving while Saudi Arabia and the UAE do not, and Egypt, Europe and the US change clocks on different dates, so differences shift during the year. Weeks with temporary differences are highlighted.
Different weekends, fewer shared days
Saudi Arabia, Egypt, Qatar, Kuwait, Bahrain and Oman take Friday and Saturday off. The UAE, Europe, the UK and the US take Saturday and Sunday off. Riyadh and Cairo share 5 working days, Sunday to Thursday; a Riyadh client with a Berlin or Dubai partner shares 4, Monday to Thursday.
| Different weekends, fewer shared days | Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|---|
| Berlin | — | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| Riyadh | ✓ | ✓ | ✓ | ✓ | ✓ | — | — |
| Cairo | ✓ | ✓ | ✓ | ✓ | ✓ | — | — |
4 shared working days per week
Your squad's working week can follow yours, recorded in your Order Form, or we can cover Sundays or Fridays with shifts, as a separate quote line.
Ramadan dates change every year; we apply them for the date you choose (8 February 2027 to 9 March 2027 this year).
- Saudi Arabia: up to 6 working hours a day for Muslim employees in the private sector, under the Labour Law
- UAE: private-sector working hours reduced by 2 hours a day
- Egypt: reduced hours set by annual government decisions
Squads stagger coverage during Ramadan so critical hours stay covered. Agree the pattern at kickoff.
The best hub for your hours
For a team in Berlin, we recommend Cairo (HQ): 8h overlap per day, 4 shared working days.
GMT+2/+3
Cairo (HQ)
our largest engineering hub; full-day overlap with the Gulf and Central Europe, and extended hours for US East Coast mornings
GMT+3
Al-Khobar
our Saudi office; in-Kingdom delivery and on-site roles at client sites across Saudi Arabia
GMT+3 and GMT+4
Riyadh and Dubai
client meetings by appointment; on-site roles at your premises
Frequently asked questions
20 minutes with a solutions architect. No sales script.
For most product teams, 4 or more shared hours a day is enough for stand-ups, reviews and quick decisions. Teams with frequent pairing or live incidents prefer 6 or more. The planner shows your actual overlap so you can decide, and Remote Pro Ai fixes the agreed core hours in your Order Form.
Saudi Arabia is on UTC+3 all year, while Egypt is on UTC+2 in winter and UTC+3 in summer. So there is no difference during Egyptian summer time and a 1-hour difference the rest of the year. A 09:00–17:00 day therefore shares 7–8 hours, and the two cities share 5 working days a week.
Cairo is 0–1 hour ahead of Central European Time and 1–2 hours ahead of London through the year, because Egypt and Europe change clocks on different dates. In practice a Cairo team shares about 7 hours with Berlin or Paris, which is why Cairo is our usual hub for European clients, with GDPR terms in every DPA.
Teams in Riyadh or Cairo work Sunday to Thursday, while Europe and the UAE work Monday to Friday, leaving 4 shared days. If you need 5 shared days, your squad can follow your working week, recorded in the Order Form, or we can cover Sundays or Fridays with shifts as a separate line.
Yes. The Ramadan toggle applies this year's dates and the shortened hours in Saudi Arabia (up to 6 a day for Muslim private-sector employees), the UAE (2 hours shorter) and Egypt (set by annual decisions). The planner recalculates overlap, and squads stagger coverage so your critical hours stay covered.
Yes. Request extended hours that start or finish later to suit your time zone; they appear as a proportional line in your quote. You can also combine Cairo engineers with on-site roles in Riyadh or Dubai in the same squad. The planner shows the effect of each option on shared hours before you request it.
Turn the right overlap into the right team
- Your overlap settings are carried into Scope Agent and the quote automatically.