How to count days outside the UK for ILR

For the Home Office’s usual continuous-residence calculation, only whole days outside the UK count. Put simply, do not count the day you leave the UK and do not count the day you return. Count the calendar days strictly between those two dates. The Home Office guidance expressly says that part-day absences of less than 24 hours are not counted.

This tells you how to count days; it does not tell you which numerical limit applies. Many routes use 180 days in any rolling 12-month period, but Long Residence historic absences and some family or dependant cases need separate rule checks.

Example: leaving on 2 May and returning on 7 May gives four full overseas days: 3, 4, 5 and 6 May. It is not six days because neither travel date is counted. If a person begins a return journey on day 180 but arrives in the UK on the following day, that arrival day is not a day of absence under the whole-day calculation; the result may still be 180 rather than 181.

1. Use one row for each distinct trip. Enter the UK departure date and UK return date, not just flight-booking dates.
2. Count the calendar days between the dates. A spreadsheet formula or calculator should be checked against the underlying itinerary.
3. Record every destination, especially where a trip includes several countries or the Common Travel Area.
4. Keep a notes column for midnight flights, cancelled flights, entry clearance travel or unclear stamps.
5. After calculating each trip, test the total within the period required by the route—often every rolling 12-month window.

For Appendix Continuous Residence routes, the current default is normally no more than 180 days outside the UK in any 12-month period. “Any” means a moving period, so total days in the calendar year do not settle the issue. Start by confirming your qualifying route and permission dates, then count whole days for every trip.

Do not transplant this method without checking. Long Residence has transition arrangements for absences that started before 11 April 2024, including historic 184-day single-absence and 548-day total tests. For leave granted under rules in place before 11 January 2018, Appendix Continuous Residence has a historic provision. A person applying as a partner under a family route should check the applicable Appendix and history rather than assuming all “spouse visas” are governed in precisely the same way.

Same-day travel: a morning departure and evening return generally has no whole day abroad. Overnight travel: use the actual dates. Leaving late on Monday and landing early Tuesday may leave no full calendar day between travel dates; leaving Monday and returning Wednesday normally includes Tuesday.

Midnight and time zones: use a coherent UK departure and UK return chronology supported by carrier records. Do not try to gain or lose a day by mixing local dates from different time zones. Missing stamps: passports are not a complete travel log for every journey. Use tickets, booking emails, bank records or employer documents to resolve the gap.

Overlapping records: an airline booking and a later re-booking can describe the same trip. Count the actual absence once. A cancelled outbound booking is not an absence. Conversely, an unstamped land-border trip may still need to be disclosed if it happened.

Evidence should tell the same story as the application form. If dates cannot be proved exactly, explain why, state the careful basis used, and attach the strongest available records. Never invent a date merely to make an absence total fit a threshold.

• Counting both departure and arrival dates as full absence days.
• Failing to disclose a day trip because it creates zero counted days.
• Counting a cancelled flight or counting an amended booking twice.
• Using the number of nights in a hotel as the legal calculation.
• Adding calendar-year totals instead of testing a rolling window.
• Assuming an employer letter changes the number of days or creates an exception.

Do weekends count? Yes, if they are whole days outside the UK. The calculation does not distinguish working days from holidays.

Do I count a trip under 24 hours? No whole day is counted where the absence is less than 24 hours, but you should still keep an accurate record in case the application asks for travel history.

Should I use passport stamps only? No. Stamps can be missing or unreadable. Build the record from all reliable evidence.

After counting each journey, many Appendix Continuous Residence routes require you to test the result in a calendar rolling 12-month period. That is a period defined by calendar dates, not a fixed 365-day look-back. Leap years are the clearest reason not to substitute a 365-day formula: 1 March 2023 to 29 February 2024 is a calendar 12-month period, even though it contains 366 dates. An absence on 29 February is not a free additional absence day.

For an absence calculation, first establish the whole days for each trip; then put those days into calendar windows. For instance, a window beginning on 15 February 2024 ends on 14 February 2025. A window beginning on 29 February 2024 needs careful calendar treatment in any tool you use. Do not cure an uncertain calculation by deleting the leap date or by using a fixed 365-day subtraction. If a window is close to 180, write its precise start and end dates in the notes.

This is different from a calendar year, tax year or visa-grant year. Trips in December and January can sit in the same calendar rolling 12-month period. A trip can also contribute to several overlapping windows. The appropriate question is whether any relevant calendar period exceeds the limit, not whether you can assign every trip to one reporting year.

Example one — amended flight: A traveller was booked to depart on 4 July and return on 10 July, but the return flight was cancelled and they entered the UK on 12 July. The correct travel row uses 4 and 12 July. Whole days abroad are 5–11 July: seven days. Retain both the original booking and the cancellation/rebooking evidence, because the original ticket alone would produce the wrong answer.

Example two — multi-country itinerary: A person leaves the UK on 28 December, visits France and Spain, and returns on 5 January. Count the seven dates from 29 December to 4 January once. The calculation is based on being outside the UK, not on adding one count per country, hotel or flight segment.

Example three — date near the limit: A travel schedule totals 180 whole days in the calendar rolling period 1 May 2024 to 30 April 2025. A trip that leaves on 30 April and returns on 2 May contributes one whole day, 1 May, to the following period, not to the first. Record the actual dates and test both calendar periods rather than rounding the trip to the nearest month.

The counting convention does not remove the need to use the correct legal framework. If an absence occurred during permission granted under Immigration Rules in place before 11 January 2018, Appendix Continuous Residence has legacy treatment that should be checked against the exact grant dates. Do not decide this by looking only at the departure date or by applying a modern calculation to all historic leave.

Long Residence requires a separate transition review. For absences beginning before 11 April 2024, the historic 184-day single-absence and 548-day total rules may be relevant. Later absences use the current calendar rolling 12-month approach. A schedule should therefore label both the date an absence started and the permission held at the time. It is possible for a ten-year history to require more than one calculation rather than one universal total.

Ask: does every departure have a corresponding return or an explanation? Are dates taken from actual travel rather than planned travel? Are two booking references actually the same journey? Has the spreadsheet used calendar dates through a leap year? Does the form’s travel history match the calculation schedule? These basic checks often catch the errors that create a false 180-day result.

Where documents conflict, do not silently choose the more favourable date. Give the date you believe is correct, explain the reason briefly and attach the material evidence. An employer letter can support a work purpose but cannot prove a return date better than carrier or border evidence where the records differ. The aim is a transparent, auditable chronology.

Open the absence calculator after assembling the travel table; it is most useful when the input dates have already been checked against records. A calculator does not decide whether a route-specific exception applies.

Does a flight that lands after midnight add a day? It may, depending on the actual UK return date. Apply the whole-day rule to the dates supported by the itinerary and proof of arrival.

Should I count days while an application is pending? Time outside the UK can still be relevant. Read the current guidance and route Rules for the facts; a pending application is not a reason to omit a trip.

Can I use a spreadsheet formula? Yes, as an aid, but check the formula’s treatment of return dates, inclusive dates and leap years. Keep the raw evidence.

Create your travel table, calculate whole days, and then run the correct calendar rolling 12-month route test. Read the Home Office continuous residence guidance, especially its whole-day and rolling-period sections, alongside Appendix Continuous Residence. Last reviewed: 18 August 2026. General information only; not legal advice.