Reykjavik is 2 hours behind Athens
Best overlap: 10:00 AM to 6:00 PM in Athens is 8:00 AM to 4:00 PM in Reykjavik.
Target 10:00 AM to 6:00 PM in Athens, which lands at 8:00 AM to 4:00 PM for the Reykjavik side. This is one of the easier pairings: 8 hours of shared time means flexible, low-stress scheduling. Note that Athens follows daylight saving while Reykjavik stays put, so the times above drift by an hour seasonally.