Google calendar for catholic holdiays/holy days of obligation?

The one I've been subscribing to for almost 2 years is this one > en-gb.christian#holiday@group.v.calendar.google.com This can be accessed here or here I guess (re region: I have not seen any differences between these 2 for Nov2020-Dec2021). I can no longer recall where I found this. When I look this up, I don't see, on the 1st page of my google search results, any official site. I notice it 1. is missing: 'Christ the King' (but it's always on Sunday, so ok fine) and 2. is missing: New year's, which I mistaken in thinking it wasn't a holy day of obligation in certain countries because apparently new year is precisely the day Solemnity of Mary, Mother of God is celebrated in Catholicism (and Eastern Orthodox Church, Anglican Communion and the Lutheran Church) 3. is missing: Solemnity of Mary, Mother of God on new year or any other day of the calendar 4. contains: Feast of the Immaculate Conception. --- **Questions**: - 1. Of what denomination/s and region/s is this above calendar? - I'm realising just now that the 'gb' is possibly (some subset of) the UK. - (According to Wiki : The UK doesn't have uniform holy days of obligation. See Scotland vs England and Wales . Also, each contains neither 'Solemnity of Mary, Mother of God' nor 'Feast of the Immaculate Conception'.) - Not sure it's (UK or whatever) Catholic. 2. Is there some kind of catholic google calendar that covers all regions? Or at least a list of google calendar links for each region (eg the philippines, hong kong, united states, argentina, etc) ? Hopefully, it includes all the holy days of obligation for all regions . - I'm talking about Roman Catholic, but if there's a calendar that contains both Roman and Eastern Catholic (This question extends to Eastern Catholicism and whatever is full communion with Roman Catholicism), then fine.