This is a topic I've written about before, asking whether people prefer holidays pre-printed into the day spaces in planners. I used to like as much holiday information as possible in planners. When I was living in unfamiliar countries I wanted to know local holidays, public holidays back in the US (where I'm from), European holidays, etc. I wanted to know what was going on everywhere in the world. I think that stemmed from not knowing what was going on around me most of the time, and the desire to feel like I was still a part of countries I used to live in but didn't any longer.
Now that I've been living in Scotland for a few years, I've found I don't want every holiday and religious observance under the sun taking up space in my planner pages. It's not that I don't care about what's happening around the world, it's just less relevant to my day to day life.
Now I want UK and US holidays, and that's pretty much it. I need to know when the holidays are here in the UK, and when my family and friends in the US have days off. There are several planners with US and UK holidays, but they tend to have Canadian and Australian holidays too.
Some planners have loads of international holiday information and observances of several religions in the day spaces, but I can see how that would be annoying for people it doesn't apply to. Other planners, like Moleskine, don't have holidays in the day spaces at all so you have to write them all in yourself.
Where do you come down on holidays in planners? Do you like seeing international holidays and religious observances? Do you want the holidays of just your own country? Or are you willing to write in all holidays yourself so you see only what is pertinent to you?