Cambridge Exam Zones Explained: Which Administrative Zone Am I In?

You have the November timetable open. Your friend in another country has the same subject, the same syllabus code, the same series — and their paper is in the morning while yours is in the afternoon. One of you has the wrong document. Probably neither of you does.

Cambridge does not publish one global timetable. It publishes six, one per administrative zone, and the zone your exam centre belongs to decides which of them applies to you. Get the wrong one and you can arrive for a paper that finished four hours earlier. Cambridge is blunt about where that lands: it “cannot accept responsibility for candidates who miss an exam because they have consulted the timetable for the wrong administrative zone.”

This page explains what a zone actually is, what it changes and what it does not, and how to find yours — plus a component-by-component comparison of the November 2026 Zone 3 and Zone 4 timetables that answers the question most guides get wrong.

What is a Cambridge administrative zone?

A Cambridge administrative zone is a grouping of exam centres by geographic location, used to schedule exams so that no candidate can sit a paper after another candidate has already left the room with it. Cambridge states the rule plainly: “Each location is allocated to one of six administrative zones.” Each zone gets its own version of the final exam timetable, and centres are told they “must ensure you access the correct timetable for your administrative zone.”

You do not apply for a zone and you cannot move between them. Your centre's country decides it. A British Council office in Amman, a private school in Lahore and an international school in Nairobi are each allocated by where they physically sit, and every candidate entered through that centre inherits the allocation.

Does my zone change my exam date?

No. It changes whether you sit that paper in the morning or the afternoon. This is the single most useful thing to know about zones, and it is why a student in one country can plan around dates published for another while still needing their own timetable for the times.

Here is what that looks like in the November 2026 series for subjects most candidates sit. Every row is the same date in both zones:

The series window itself is also shared. Cambridge November 2026 opens on Monday 28 September 2026 and closes on Friday 13 November 2026 in both zones. If you want the full subject-by-subject breakdown of dates, our November 2026 IGCSE timetable guide lays out the whole series alongside the Edexcel window and the entry deadlines.

Why do zones exist at all?

Security, and the mechanism is more specific than most people assume. Cambridge says zones help it “maintain exam security, and manage the timetabling of our exams.” The instrument that does the work is called a Key Time.

Each session has exactly one Key Time — one for morning, one for afternoon, one for evening. Every candidate entered for that session must be under Full Centre Supervision at that moment, wherever they are in the zone. If a centre starts its exam after the Key Time, candidates are supervised from the Key Time until the paper begins. If a centre finishes before it, candidates stay supervised until the Key Time passes. Nobody gets to leave a room holding fresh knowledge of a paper that another candidate in the same zone has not yet opened.

Splitting the world into six zones keeps each of those supervision windows short enough to be workable. A single global session would mean somebody sitting an exam at three in the morning.

The part that costs marks: your zone decides your variant

Every Cambridge component code ends in a variant digit. Maths Paper 2 is 0580/21 in one zone and 0580/22 in another — same syllabus, same paper number, different question paper. Students who revise from the wrong variant are practising real papers that were never going to be their paper.

We counted the variants in both November 2026 timetables:

That mixture is the trap. A Zone 3 candidate who assumes “I am variant 1” because their Maths paper is 0580/21 will reach for 0610/11 in Biology, and no such paper exists for them — Biology in Zone 3 runs on variant 2. The only reliable move is to read the variant digit off your own statement of entry, subject by subject.

How do I find out which zone I am in?

Three routes, in order of reliability:

1. Ask your exams officer. Your school or British Council office knows its zone because it downloads the timetable every series. This is the only answer that is definitive for you.
2. Read your statement of entry. It lists your components with their variant digits, which tells you which timetable you are on even if the zone number is not printed.
3. Use the zone lookup on the Cambridge website. Cambridge publishes a location-to-zone tool in the exams officers' guide. It answers by country and city.

What does not work is inferring your zone from a friend, a forum post or a timetable PDF that a search engine surfaced. Zone allocations are per centre, and two centres in the same city can sit in different zones if one of them is administered differently.

What to do with this before your next exam

1. Confirm your zone with your centre this week, not the night before. It takes one message.
2. Download that zone's timetable from the Cambridge site rather than a re-hosted copy, and check the version number. Cambridge revises timetables after publication and says so.
3. Write down the variant digit for every subject you are entered for. They are not all the same digit.
4. Practise that variant. This is the part that changes your grade rather than your logistics.

If you are sitting November 2026, the series is already underway — it opened on 28 September. Our November 2026 exams guide covers entry routes and what the series is for, and the private candidate guide covers the British Council route if you are entering outside a school.

Zones look like bureaucratic noise until the week they decide whether you walk into a room at nine in the morning or two in the afternoon, and which of two real past papers was worth your last month. Confirm the zone, note the variants, then spend the rest of your time on the papers that are actually yours.