How to Find Overlapping Public Holidays Between Countries

You’re scheduling a project deadline, a joint meeting, or a launch date across two countries, and you want to avoid the dates that are public holidays in both places — the days when neither team is realistically going to be available. Checking two separate holiday calendars manually, one country at a time, and cross-referencing them by hand for overlapping dates is tedious enough that it’s easy to just miss one.

The problem compounds because holiday dates aren’t fixed the same way across countries — some holidays are on a fixed calendar date every year, others shift (like holidays tied to a lunar calendar or a specific weekday-of-month rule), which makes a quick mental cross-check unreliable even for someone who knows both countries’ major holidays reasonably well.

What comparing holiday calendars actually involves

Comparing two countries’ public holidays for overlap means taking each country’s holiday list for the relevant year, matching them by exact date, and surfacing any dates that appear as a public holiday in both calendars. Since not every country recognizes the same holidays, and the number of public holidays varies quite a bit between countries, the overlap set is often much smaller than either country’s total holiday count — which is exactly the useful, condensed information you actually want for scheduling purposes.

Why people get stuck here

• Manually cross-checking two separate holiday lists. Doing this by eye across two full-year calendars is slow and easy to miss a date, especially for less well-known regional holidays.
• Not knowing all of a foreign country’s public holidays. It’s common to know your own country’s major holidays well but be unfamiliar with another country’s full calendar, especially smaller regional observances.
• Assuming a holiday’s date is fixed across years. Some holidays move from year to year, so a comparison done for one year doesn’t automatically carry over correctly to the next.
• Overlooking regional variation within a single country. Some countries observe different public holidays by state, province, or region, which a single national-level comparison can’t fully capture.

What a good holiday overlap finder looks like

Compares two full calendars automatically

Cross-referencing every date in both countries’ holiday lists at once removes the manual scanning that’s genuinely easy to get wrong by hand.

Surfaces just the overlapping dates clearly

Since the useful output is specifically the shared dates — not the full list of holidays in either country — presenting only the overlap keeps the result immediately actionable for scheduling.

Covers a reasonable range of commonly needed countries

Supporting the country pairs people most commonly need to check makes the tool broadly useful for typical cross-border scheduling needs.

Common mistakes to avoid

• Scheduling around a manually-recalled list of “major” holidays for a country without checking its actual full public holiday calendar.
• Reusing last year’s holiday overlap check for this year without confirming that movable holiday dates haven’t shifted.
• Forgetting that regional or state-level holidays can affect availability even when they’re not counted as a national public holiday.
• Assuming a bundled sample holiday dataset covers every regional variation — always confirm the specific dates against an official source when the scheduling decision is high-stakes.
• Ignoring weekends entirely when scheduling around holidays, since a holiday landing near a weekend can extend the practical unavailability further than the holiday date alone.

How to do it with Public Holiday Overlap Finder

Online Tool Store’s Public Holiday Overlap Finder compares calendars entirely in your browser, using a small bundled sample dataset.

1. Open the Public Holiday Overlap Finder tool.
2. Select the two countries you need to compare.
3. Review the dates that are public holidays in both.
4. Avoid scheduling important cross-border meetings or deadlines on those overlapping dates.

Frequently asked questions

Does this cover every country’s official holiday calendar exactly?

It uses a small bundled sample dataset intended to illustrate typical overlaps between commonly compared countries — for a high-stakes scheduling decision, always confirm exact dates against each country’s official government holiday calendar for the specific year in question.

Why do some holidays fall on different dates each year?

Some public holidays are tied to a lunar or lunisolar calendar, or defined as a specific weekday-of-month rule (like “the third Monday of January”) rather than a fixed calendar date, which means their exact date shifts from year to year in the standard Gregorian calendar.

Should I also account for weekends when avoiding overlapping holidays?

It’s worth checking — a holiday that falls right before or after a weekend effectively extends the practical unavailability window beyond just that single date, which matters for scheduling something that needs a full business day’s attention on both sides.

Final thought

Cross-border scheduling only works smoothly if you know the dates both sides are actually unavailable — check the real overlap instead of relying on memory of each country’s “major” holidays.

Try the free Public Holiday Overlap Finder tool