Hours you're both awake
- 8 AM–10:30 AM in San Francisco = 8:30 PM–11 PM in Chennai
- 7:30 PM–11 PM in San Francisco = 8 AM–11:30 AM in Chennai
About 6 hours a day, counting each of you awake from 8 AM to 11 PM. Set your own hours →
Long-distance city guides / San Francisco and Chennai
San Francisco to Chennai: time difference, best time to call, and where to meet
Chennai is 12.5–13.5 hours ahead of San Francisco, depending on the time of year. The best time to call is usually 7:30 PM–9:30 PM in San Francisco, which is 8 AM–10 AM in Chennai (when you're 12.5 hours apart).
San Francisco–
Chennai–
How far apart you are
13,885 km (8,628 mi)
About 18 hours on a non-stop flight.
Where to meet halfway
- Tokyo, Japan: 8,272 km (5,140 mi) from San Francisco, 6,415 km (3,986 mi) from Chennai
- Oslo, Norway: 8,340 km (5,182 mi) from San Francisco, 7,616 km (4,732 mi) from Chennai
- Dublin, Ireland: 8,177 km (5,081 mi) from San Francisco, 8,616 km (5,353 mi) from Chennai
Making San Francisco–Chennai work
- At 12.5 hours apart, one of you is asleep for most of the other's day. Agree who flexes on which days, so the late calls are shared.
- Lean on asynchronous rituals: a daily question you both answer, photos of your day, a letter you each add to.
- Plan one long weekend call a week, when nobody has work in the morning.
Count down to your next visit
Set the date and send them a countdown.
Start a reunion countdown →San Francisco and Chennai on one map
A personalised print of the two of you, and the distance in between.
Make your map →Stay close day to day
Far Fox gives you a daily question, shared rituals, and a fox you raise together.
Try Far Fox free →Questions couples ask
What is the time difference between San Francisco and Chennai?
Chennai is 12.5–13.5 hours ahead of San Francisco, depending on the time of year.
What is the best time to call between San Francisco and Chennai?
The best time to call is usually 7:30 PM–9:30 PM in San Francisco, which is 8 AM–10 AM in Chennai (when you're 12.5 hours apart). That gives you about 6 hours a day when you are both awake, between 8 AM and 11 PM local time.
How far is San Francisco from Chennai?
13,885 km (8,628 mi) in a straight line. A non-stop flight takes about 18 hours.
Where can a couple meet halfway between San Francisco and Chennai?
The fairest cities to meet in are Tokyo, Oslo, Dublin. Tokyo is 8,272 km (5,140 mi) from San Francisco and 6,415 km (3,986 mi) from Chennai.