Hi and welcome!
Well currently my SO and I have an 18 hour time difference, but we could simplify that down to a six hour time difference as it doesn't matter that it's a different day, as long as we can spend time with each other, and we do, multiple times a day; although having said that, he's just gone to Day Light saving, and we will lose that next month, so we will have to ajust to seven.
It's not easy, but you can work around it. Just sit down and talk about your schedules and when you can slip in a chat during the day. Not every couple talks every day; some only text and have one or two nights a week set up for chatting.
My SO is in between jobs right now so it's a lot easier for us at present. When he gets another job, we will have to sit down and work it out again.