Tel Aviv is 2 hours ahead of Reykjavik
Best overlap: 8:00 AM to 4:00 PM in Reykjavik is 10:00 AM to 6:00 PM in Tel Aviv.
The overlap falls at 8:00 AM to 4:00 PM in Reykjavik, or 10:00 AM to 6:00 PM if you're in Tel Aviv. Scheduling is forgiving here: with 8 hours of overlap, a missed slot just means picking another one the same day. Just remember Tel Aviv changes its clocks for daylight saving and Reykjavik doesn't, so confirm the overlap whenever the seasons turn.