Reykjavik is 7 hours behind Hanoi
Best overlap: 3:00 PM to 6:00 PM in Hanoi is 8:00 AM to 11:00 AM in Reykjavik.
Book within 3:00 PM to 6:00 PM Hanoi time (8:00 AM to 11:00 AM in Reykjavik) and both teams will be at work. Since Reykjavik is 7 hours behind Hanoi, the workdays overlap by around 3 hours; 3:00 PM in Hanoi (8:00 AM in Reykjavik) makes a reliable recurring slot.