Honolulu is 12 hours behind Vienna

There is no standard 8-to-6 overlap. Someone joins early or late.

Vienna and Honolulu live on different parts of the day. With 12 hours between them, standard working hours simply don't meet. Make the most of handoffs — end-of-day in one city becomes start-of-day in the other, so pass work along rather than meeting live. Don't be caught out by clock changes — Vienna observes daylight saving and Honolulu doesn't, so the offset varies by an hour through the year.