Q: Apple music date added is set to 1/01/1970

Just a thought, are your system and region settings in Windows, iTunes and the iTunes Store all in agreement with each other?

tt2

I have absolute similar problem. I don't use "Add song to library when add song your playlist " setting and I don't want to use it. If I add that song playlist to library, it happens.

Since the issue is about the setting of the date added value to something other than the current date yours would seem to be a completely different topic that would be better served in a thread of its own.

tt2

Nope. I'm sure this is an Apple Music with iTunes integration problem. My all time settings are ok and working.

Do you see this option? I don't use this option too in my iPhone. For example: When I add a song from Apple Music to my playlist, it doesn't appear in my library naturally but it appears in my playlist. When if I add that song to "My Library" or "My Music" later, it looks like this:

There is an interesting detail! Jasper's "Date Added Clock" says 2:00, mine is 3:00. I think those are about Time Zone. Can we say iTunes or Apple Music can read our times and even "Region?

OK, so you are seeing the 1970 issue. From your first post I thought it was something else, sorry. 1/1/70 is the start of the UNIX epoch, so it is a bit like the date/time is set to zero, and then perhaps adjusted for time zone. I no longer have an active Apple Music subscription so I can't test behaviour here.

tt2

Can you explain more?

Yes. I think that solved with enable this option but I don't want to enable that option. Thats why my problem still continues. Please fix this Apple!

See iTunes Feedback to pass on suggestions to Apple.

tt2

This problem persists and like kribmaetl I don't wan't to enable that option. I have a long playlist of things to listen to (but which might trun out to be rubbish) which I then take from to add to my music.

I've reported via feedback a number of times. Sort it out Apple!