Japan - Wrong public holiday

[AntoineGlacet]

Affected country

Japan

Affected public holiday

Greenery Day 2025 & Children's Day 2025

Source of the information

https://www.google.com/search?q=japan+holidays&rlz=1C1GCEA_enJP1061JP1061&oq=japan+holidays&gs_lcrp=EgZjaHJvbWUyDwgAEEUYORiRAhiABBiKBTINCAEQABiRAhiABBiKBTINCAIQABiRAhiABBiKBTIHCAMQABiABDIHCAQQABiABDIHCAUQABiABDIHCAYQABiABDIGCAcQRRg80gEINTU1OGowajeoAgCwAgA&sourceid=chrome&ie=UTF-8

More information

2 holidays fall on the same day.
generally, the holiday API for japan is unsuable

[tinohager]

https://github.com/nager/Nager.Date/blob/main/src/Nager.Date/HolidayProviders/JapanHolidayProvider.cs

"Greenery Day" and "Children's Day" fall on Monday because they take place at the weekend and, according to my research, are observed on Monday.

generally, the holiday API for japan is unsuable

Can you perhaps add more information to your statement for Japan, is it just about the 2 days why you are dissatisfied or something else?

[AntoineGlacet]

Sorry for my lack of detail in this answer and after re-reading I realize my wording is bad!

I will give more exemples of mismatch.

As for the 2 days in my comment:
https://www8.cao.go.jp/chosei/shukujitsu/gaiyou.html
Greenery Day is May4th and Childrens'day is May 5th

There is also a mechanic of substitution days.

I will try to expand in a separate issue if needed.