Worldwide Holidays Days API

Interesting idea, but needs more work.

Scanning the list of countries: Presenting them alphabetically and vertically, instead of left-to-right, makes much easier scan-ability. Some countries were also out-of-place alphabetically, e.g. Spain.

No countries with a Friday-Saturday weekend seemed to be present, for example Bangladesh. Knowing the days of the weekend is really useful and really related to needing to know public holidays (and I imagine a pretty quick-kill as it only needs to be input once per country).

I checked public holidays for where I am currently: China. It's wrong. National week (October 1st to October 7th) is 7 days, not one day, today's the last day. But the preceding Saturday and Sunday were working days (i.e. there was a 7 day working week before the 7 day national week of holiday, displaced weekend).

This seems valuable. But only if accurate and covers everywhere. Which it isn't now.

I also have an accurate list of international holidays (including weekends) in Outlook provided by Outlook/Exchange, so where can the value be sold most? For example, I know a 5-person team in a Fortune 500 that exist solely to make sure this kind of static data is maintained correctly. Any mistake though is gonna need a very strong SLA because it will cost them millions if mistakes happen.

Also, your 'About Us' page doesn't work.

Useless for Germany, since it apparently doesn't have data for states, counties or cities, all of which can (and do) have different public holidays in Germany. I'm sure there's more countries where this means the data is incorrect.