Best time to call across time zones

Pick your city and theirs. You see the hours you are both awake, in both local times, so the call happens before someone falls asleep.

London is 5 hours ahead of New York right now.

Best times to call

  • 8:00 AM – 6:00 PMin New York1:00 PM – 11:00 PMin London

10 hours a day when you are both awake.

New YorkLondon
12:00 AM5:00 AMSomeone is asleep
1:00 AM6:00 AMSomeone is asleep
2:00 AM7:00 AMSomeone is asleep
3:00 AM8:00 AMSomeone is asleep
4:00 AM9:00 AMSomeone is asleep
5:00 AM10:00 AMSomeone is asleep
6:00 AM11:00 AMSomeone is asleep
7:00 AM12:00 PMSomeone is asleep
8:00 AM1:00 PMBoth awake
9:00 AM2:00 PMBoth awake
10:00 AM3:00 PMBoth awake
11:00 AM4:00 PMBoth awake
12:00 PM5:00 PMBoth awake
1:00 PM6:00 PMBoth awake
2:00 PM7:00 PMBoth awake
3:00 PM8:00 PMBoth awake
4:00 PM9:00 PMBoth awake
5:00 PM10:00 PMBoth awake
6:00 PM11:00 PMSomeone is asleep
7:00 PM12:00 AMSomeone is asleep
8:00 PM1:00 AMSomeone is asleep
9:00 PM2:00 AMSomeone is asleep
10:00 PM3:00 AMSomeone is asleep
11:00 PM4:00 AMSomeone is asleep

How to use the overlap

Set the hours each of you is really free, not just awake. If one of you works late, move the start of that window.

The longest window comes first. Protect it like an appointment: a short call you both show up for beats a long one you keep moving.

If there is no overlap, take turns with the inconvenient hour, or send something they open when they wake up.

Read the guide to time zones in a long-distance relationship →

Keep this on your Home Screen

Till puts a live countdown widget on your iPhone Home Screen, and you can share it with your person so you both see the same number.

Download on theApp Store
iOS 17 or later

Questions about time zones

Does it handle daylight saving time?

Yes. The difference is worked out for today from each city's time zone rules, so it changes by itself when a city moves its clocks. In March, October and November, Europe and North America change on different weekends, so the gap can be one hour different for a few weeks.

My city is not in the list. What do I pick?

A city in the same time zone. Barcelona has Madrid's time, Brasília and Rio have São Paulo's, and Geneva has Zurich's.

Is anything saved?

No. Everything runs in your browser. The cities only go into the page address, so the link you share opens the same plan.

What counts as awake?

The hours you set for each person. They start at 8:00 to 23:00; change them to the hours you are really free to talk.