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Observance · Poland

Anniversary of the Soviet invasion of Poland is coming up.

Friday, 17 September 2027

A week before, the day before and on the day. No account, nothing else.

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All of Poland’s public holidays in your calendar · Long weekends in Poland

About Anniversary of the Soviet invasion of Poland

Anniversary of the Soviet invasion of Poland is an observance (marked, but not a day off) in Poland.

In 2027 it falls on a Friday; in 2028 it’s on Sunday 17 September, and in 2029 on Monday 17 September. Because it’s a Friday this time, wherever it’s a day off it makes a long weekend of at least three days. Also in September 2027: World Patient Safety Day (17 Sep), National Apple Dumpling Day (17 Sep) and World Manta Day (17 Sep). From this page you can add it to your calendar, get an email before it, share the countdown, or show it full screen.

How we work out the date
It’s on 17 September every year.
Sources

Page updated 5 November 2026. Report a wrong date

Dates

YearDate
2027Friday, 17 September
2028Sunday, 17 September
2029Monday, 17 September
2030Tuesday, 17 September
2031Wednesday, 17 September
2032Friday, 17 September
2033Saturday, 17 September
2034Sunday, 17 September
2035Monday, 17 September
2036Wednesday, 17 September

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