Does your arrival day count? Almost always, yes
The most common day-counting mistake, and the one that gets people refused at the border. Worked examples for Schengen, the UK and fixed-day permissions.
If you take one thing from this resource centre, take this: the day you arrive is day one, and the day you leave is a day too.
It sounds like a technicality. It is the difference between compliance and a refused entry, and it is wrong in the dangerous direction — people who miscount this way believe they have more days than they do.
The arithmetic
A stay from 1 June to 3 June is:
- 1 June — day 1
- 2 June — day 2
- 3 June — day 3
That is three days, not two. Subtracting one date from the other gives you 2, which is the number of nights, not the number of days you were present.
This is why hotel nights and immigration days never match. A three-night stay is a four-day presence.
Schengen states it explicitly
The Schengen Borders Code is unambiguous: the date of entry counts as the first day of stay and the date of exit counts as the last day of stay. There is no partial credit for landing at 23:40.
Worked through: you arrive 1 June 2026 and leave 20 June 2026. That is 20 days against your 90, not 19.
The UK counts differently again
A UK Standard Visitor may usually stay up to 6 months from the date of entry — a calendar period, not a day count. Enter on 1 January and the period runs to 30 June.
That distinction matters more than it looks, and it has its own article: Six months is not 180 days.
Fixed-day permissions
Where a permission grants a set number of days from entry — the US Visa Waiver Program's 90 days, or the UAE's 90 days per visit on a 5-year tourist visa — the same rule applies. Day one is the day you land.
Enter on 1 June 2026 on a 90-day permission and your last permitted day is 29 August 2026, not 30 August. Count it as entry day plus 89, not entry day plus 90.
The Visa Stay Calculator works this out from the allowance you were actually granted, and the Date Difference Calculator will show you inclusive and exclusive counts side by side so you can see the off-by-one for yourself.
The one exception worth knowing
Permissions measured in hours rather than days do not work this way. A UAE transit visa is issued for 48 or 96 hours from arrival, and hours run from the actual time you landed. DAYOZA deliberately declines to convert those into calendar days, because rounding would move your deadline by up to a day on exactly the permission where hours are the point.
Sources: European Commission — Short-stay calculator; GOV.UK — Standard Visitor.
Before you travel: DAYOZA provides informational calculations based on the rules and sources available on this page. Immigration and entry requirements can change. Always verify your eligibility and permitted stay with the relevant official authority before traveling.