How to read it
New York and San Francisco, side by side
Each row is one city's day, half an hour to a square, lined up by the hours along the bottom.
- 1Filled: at the desk, 9:00 to 18:00 where that city is.
- 2Grey: up early, up late, or the weekend.
- 3Outline: asleep.
- 4Red band: your slot. Read straight down to see the same moment in every city.
- 5A marks the best time for everyone; B, when there is one, the next best.
The red band is the best time to call on Wed, 21 Oct 2026: 12:00–13:00 in New York, which is 09:00–10:00 in San Francisco.
Through the year
How the gap between New York and San Francisco moves
San Francisco is 3h behind New York today. Both cities change their clocks on the same days, so the gap stays the same all year.
- San Francisco 3h behind New York
Hour by hour
New York to San Francisco time, hour by hour
On a working day (Wed, 21 Oct 2026), with working hours of 9:00 to 18:00 in both cities.
- New York starts work 09:00 06:00 in San Francisco Asleep
- San Francisco starts work 09:00 12:00 in New York At desk
- New York finishes work 18:00 15:00 in San Francisco At desk
- San Francisco finishes work 18:00 21:00 in New York Late
Show all 24 hours
| New York | San Francisco |
|---|---|
| 00:00 Asleep | 21:00 Tue Late |
| 01:00 Asleep | 22:00 Tue Asleep |
| 02:00 Asleep | 23:00 Tue Asleep |
| 03:00 Asleep | 00:00 Asleep |
| 04:00 Asleep | 01:00 Asleep |
| 05:00 Asleep | 02:00 Asleep |
| 06:00 Asleep | 03:00 Asleep |
| 07:00 Early | 04:00 Asleep |
| 08:00 Early | 05:00 Asleep |
| 09:00 At desk | 06:00 Asleep |
| 10:00 At desk | 07:00 Early |
| 11:00 At desk | 08:00 Early |
| 12:00 At desk | 09:00 At desk |
| 13:00 At desk | 10:00 At desk |
| 14:00 At desk | 11:00 At desk |
| 15:00 At desk | 12:00 At desk |
| 16:00 At desk | 13:00 At desk |
| 17:00 At desk | 14:00 At desk |
| 18:00 Late | 15:00 At desk |
| 19:00 Late | 16:00 At desk |
| 20:00 Late | 17:00 At desk |
| 21:00 Late | 18:00 Late |
| 22:00 Asleep | 19:00 Late |
| 23:00 Asleep | 20:00 Late |
Questions
Questions people ask
What is the time difference between New York and San Francisco?
San Francisco is 3h behind New York (as of Wed, 21 Oct 2026). Both cities change their clocks on the same days, so the gap stays the same all year.
What is the best time for a call between New York and San Francisco?
On a working day, the best time for a call is 12:00–13:00 in New York, which is 09:00–10:00 in San Francisco. Everyone is at their desk.
Does New York change its clocks?
Yes. New York moves its clocks back an hour on Sun, 1 Nov 2026, and forward an hour on Sun, 14 Mar 2027.
Does San Francisco change its clocks?
Yes. San Francisco moves its clocks back an hour on Sun, 1 Nov 2026, and forward an hour on Sun, 14 Mar 2027.
More city pairs
Compare more cities
New York and…
- New York and Mumbai
- New York and Delhi
- New York and Bengaluru
- New York and Dubai
- New York and Abu Dhabi
- New York and Riyadh
- New York and Doha
- New York and Singapore
- New York and Hong Kong
- New York and Tokyo
- New York and Sydney
- New York and London
- New York and Paris
- New York and Berlin
- New York and Amsterdam
- New York and Toronto
- New York and Chicago
- New York and Los Angeles
San Francisco and…
- San Francisco and Mumbai
- San Francisco and Delhi
- San Francisco and Bengaluru
- San Francisco and Dubai
- San Francisco and Abu Dhabi
- San Francisco and Riyadh
- San Francisco and Doha
- San Francisco and Singapore
- San Francisco and Hong Kong
- San Francisco and Tokyo
- San Francisco and Sydney
- San Francisco and London
- San Francisco and Paris
- San Francisco and Berlin
- San Francisco and Amsterdam
- San Francisco and Toronto
- San Francisco and Chicago
- San Francisco and Los Angeles
From the team behind 10:10
Running an event across time zones?
C4E has spent twenty years running conferences, dealer meets and offsites in more than 40 countries, with clients, speakers and crews in different time zones. 10:10 is one of the tools we built for our own shows. It is free, with no account and nothing upsold.