how to say good night to a person who is living in Usa & you are in Asia

i can answer your question so easily....especially my BF is 8500miles away from me and yet we had the same time but differ in a day....will like this time im in morning and his time is night...when we start and endup our chat he will say to me good morning, hope your day is fine....and what il say to him good evening hope your day is fine too( iwas talking his earlier) and in time of his bedtime just simple good evening and smiley hugs and kissess..:) or if your in cam blow a kiss..:)

we will always have conference call with Canada co-workers in our morning time, and in canada it is their night, when the call is over, I always say "have a good time", it's feel very funny, this saying always make us more happier, haha. In fact, maybe we don't need to worry about that, "good night" and "good morning" also should be OK, i think, it doesn't matter for your co-worker, and they can understand your meaning very easily. thanks

Its always better to say have a good time, rather than specifying the time.

I usually say to a few people I talk to around the world good night - they realize that we have different times. Also, I will mention Im tired or just come out and say Im going to bed. A lot of people understand that there are different time zones. If your not comfortable saying so bluntly say something like have a good time, good day, or so on. Just reword it to be generic.

If you know their day is just starting maybe just end with a simple, "have a good day."