Collect tutor availability in each teacher’s local time and IANA zone, then convert each lesson date into the family’s zone. As of 21 October 2026, Pakistan stays at UTC+5, putting Karachi 5 hours ahead of winter UK time and 4 ahead during British Summer Time; Egypt changes separately.
Why can’t teacher availability be a fixed grid?
Teacher availability can repeat in local time while the matching family hours change through the year. A grid without dates hides those changes. Record the teacher’s local block, the teacher’s IANA zone, and the dates when availability applies. Then check each proposed occurrence against the family’s local calendar before you promise a recurring slot.
Decide whose clock anchors the class. A class anchored to the family’s local time protects the family’s routine, but may move within the teacher’s day. A class anchored to the teacher’s clock does the reverse. Neither choice removes the need to check availability.
Keep an availability record separate from a booking. A teacher’s available block is permission to consider a time, not a promise that every hour is already assigned. Our guide to scheduling classes across time zones explains the wider scheduling process.
How does Pakistan’s fixed clock affect teacher availability?
Pakistan does not change its clock, so Karachi’s gap to a family changes when the family’s location changes clocks. As of 21 October 2026, Karachi is 10 hours ahead of New York in winter and 9 hours ahead during US daylight saving time. A teacher can keep the same local availability while covering different family hours across the seasons.
Example: a teacher offers 17:00 Karachi. Subtracting the supplied offsets gives 12:00 UK in winter and 13:00 during British Summer Time. If a family wants to keep the winter UK appointment time through summer, check the teacher’s availability again before keeping that family time fixed.
For North American evening demand, ask directly about overnight availability. Do not infer willingness to work nights from a teacher’s location. During hiring for online Quran teaching, discuss the actual local teaching block and which calendar day contains the class.
Why do Egypt’s clock-change dates need a separate check?
Egypt changes clocks on different dates from the UK and US, so a Cairo teacher’s availability needs its own dated conversion. Under the rule recorded as of 21 October 2026, Cairo uses UTC+3 from 24 April through the end of 29 October, then UTC+2. Treat those dates as planned if the current rule holds, and recheck before scheduling around the change.
Cairo’s gap ahead of London changes across these 2026 periods, calculated from the supplied Cairo and UK offsets:
- January through 28 March: 2 hours ahead.
- 29 March through 23 April: 1 hour ahead.
- 24 April through 24 October: 2 hours ahead.
- 25 through 29 October: 3 hours ahead.
- From 30 October: 2 hours ahead.
Example: holding a Cairo lesson at 16:00 gives London 14:00 on 24 October, 13:00 on 25 October, and 14:00 on 30 October. Those are calculated conversions, not changes to the teacher’s offered time.
The caution has a factual basis. IANA’s Africa commentary records Egypt’s Ramadan suspension in 2014 and canceled clock changes in 2015 and 2016. Rechecking Egyptian dates is part of maintaining the schedule, rather than assuming last season’s grid still applies.
How do the Gulf, UK and North America fit together?
The Gulf needs a different availability check from London or New York. As of 21 October 2026, Saudi Arabia stays at UTC+3 and the UAE at UTC+4 without daylight saving time. Riyadh is therefore 8 hours ahead of New York in winter and 7 hours ahead during US daylight saving time. Fixed Gulf clocks still produce changing gaps abroad.
Use cities rather than country labels when collecting family demand. “North America” is too broad for a booking record. The New York columns below describe New York; they should not become a default conversion for every US or Canadian family.
The UK and US also change on different weekends. For 2026, the March transition dates are 29 March in the UK and 8 March in the US. The autumn dates are 25 October and 1 November respectively. Use the DST calendar for 2026–2027 to organize checks around each relevant change, rather than sending a single seasonal timetable.
Where do the teaching hours overlap?
The calculated availability grid below converts the supplied teacher blocks using the stated UTC offsets. Each column describes the destination’s clock regime, rather than a shared worldwide summer or winter. Read the Cairo rows against the actual date: Egypt’s winter clock can overlap with British Summer Time or US daylight saving time during the transition periods.
| Teacher’s local block (24-hour time) | UK winter, GMT (24-hour time) | UK summer, BST (24-hour time) | New York winter, EST (24-hour time) | New York summer, EDT (24-hour time) |
|---|---|---|---|---|
| Karachi 16:00–22:00, UTC+5 | 11:00–17:00 | 12:00–18:00 | 06:00–12:00 | 07:00–13:00 |
| Karachi 01:00–05:00, UTC+5 | 20:00–24:00, previous day | 21:00 previous day–01:00 teacher’s date | 15:00–19:00, previous day | 16:00–20:00, previous day |
| Cairo 16:00–22:00, winter UTC+2 | 14:00–20:00 | 15:00–21:00 | 09:00–15:00 | 10:00–16:00 |
| Cairo 16:00–22:00, summer UTC+3 | 13:00–19:00 | 14:00–20:00 | Not concurrent in 2026 | 09:00–15:00 |
Calculated means subtracting the teacher’s UTC offset, then adding the destination’s offset. Example: Karachi 16:00 minus 5 hours gives 11:00 UTC; adding 1 hour for BST gives 12:00 UK time. The same arithmetic applies to the block’s end.
The midnight labels matter. For the Karachi overnight block, UK and New York start times fall on the previous calendar day. In the BST column, the block crosses midnight and ends on the teacher’s date. Store the day relationship with the offer, not just the clock range.
Cairo’s matching seasonal columns look stable, but the transition columns explain why a copied grid fails. Use the dated periods above when Egypt and the destination are on different seasonal clocks.
How should you collect availability from teachers?
Collect availability as a local commitment with a named zone, an effective date range, and an agreed booking anchor. Ask teachers to review converted bookings before you confirm them with families. The collection process should distinguish regular availability from exceptions, so an admin can tell whether a changed appointment still fits the teacher’s actual working day.
- Ask for the teacher’s local IANA zone. Record Asia/Karachi or Africa/Cairo rather than an abbreviation copied from a family message.
- Collect available weekdays and local start and end times. Ask teachers to state overnight blocks clearly, including which day the block begins.
- Record when availability begins and when the teacher wants availability reviewed. Keep temporary exceptions distinct from regular hours.
- Convert the family’s requested dates, including dates on either side of relevant clock changes. Check both the local time and local weekday.
- Agree whose clock the recurring class follows. Confirm the resulting local appointment with the teacher and family before booking.
- Recheck exceptions when a teacher changes location or a clock rule changes. Update affected bookings rather than relying on an old screenshot.
A useful confirmation states the lesson date, weekday, local time, and named zone for each person. Avoid asking teachers to approve a timetable displayed solely in the academy’s zone. A correct conversion is useful only when both people recognize the appointment they are accepting.
How Halqora handles this
Halqora is management software for online academies. Halqora scheduling stores scheduling rules in each IANA time zone, shows teachers their calendars in their own zone, and shows admins calendars in the academy’s zone. For one-to-one classes, the practical step remains the same: agree whose local clock the recurring rule follows and confirm that the resulting dates fit the teacher’s availability.
Sources
- IANA Asia time-zone data, checked 21 October 2026
- IANA Africa time-zone data, checked 21 October 2026
- NIST daylight saving time guidance, checked 21 October 2026
- UK government clock-change calendar, checked 21 October 2026
