Best overlap: 2:00 PM to 6:00 PM in Reykjavik is 8:00 AM to 12:00 PM in Austin.
The hours that work for both Reykjavik and Austin are 2:00 PM to 6:00 PM (Reykjavik) and 8:00 AM to 12:00 PM (Austin). Roughly 4 hours of shared hours means scheduling takes a little care — 2:00 PM in Reykjavik / 8:00 AM in Austin is a safe default. The difference isn't constant year-round: Austin adjusts for daylight saving while Reykjavik holds steady.
24/7 support sounds great until a P1 ticket falls into the gap between Manila signing off and Dublin signing on. Here is how to design a follow-the-sun support model that actually catches tickets at the boundary. -