A lot of organization ignore time zone, though are crucial. They can be double edge sword. If you run 24/7 SaaS they can help you deliver better reliability and avoid waking up at night, but they also created all sort of challenges.

12h time difference is the worst one, but in fact any cause some changes to your organization and you may need to learn to rely on async/writting skills.

I recommend a book: https://www.amazon.com/Working-While-Theyre-Sleeping-Separat...