Whenever we find the right time to talk I use skype, viber or whatsapp voice messages because I really enjoy a fluent conversation and try to avoid texting back and forth.
I have this specific group of friends from previous job in Chile. we are three, one living in Santiago, the other in London and me in Sydney and I came up with this time zone solution.
It was a quick DIY project, I enjoyed doing it and I can apply the same with my family who's in Santiago as well.