World clock and meeting planner
Data generated: July 31, 2026
San Francisco and Bangalore represent one of the most active technology corridors in the world, and the two cities are separated by a half-hour offset gap that catches people out if they assume every time difference lands on the hour.
Bangalore is 12.5 or 13.5 hours ahead of San Francisco depending on the time of year, since India keeps a single fixed offset all year while San Francisco shifts with US daylight saving time.
That half-hour means a meeting scheduled '13 hours ahead' by habit will actually be 30 minutes off, which is enough to disrupt a recurring call.
Because the offset is close to twelve hours, working days barely touch at all, which is why most cross-team communication between the two cities is asynchronous rather than live.
As of July 31, 2026, Bangalore is 12 hours 30 minutes ahead of San Francisco (San Francisco is UTC-7, Bangalore is UTC+5:30). San Francisco is currently on daylight saving time; Bangalore is currently not on daylight saving time.
There is no overlap between standard 9:00 AM-5:00 PM working hours in San Francisco and Bangalore at the current offset. Meetings need to happen outside standard hours on at least one side.
Times reflect the current UTC offset for each city as of the generation date above, and can shift by up to an hour around a daylight saving change on either side.
| San Francisco | Bangalore |
|---|---|
| 12:00 AM | 12:30 PM |
| 1:00 AM | 1:30 PM |
| 2:00 AM | 2:30 PM |
| 3:00 AM | 3:30 PM |
| 4:00 AM | 4:30 PM |
| 5:00 AM | 5:30 PM |
| 6:00 AM | 6:30 PM |
| 7:00 AM | 7:30 PM |
| 8:00 AM | 8:30 PM |
| 9:00 AM | 9:30 PM |
| 10:00 AM | 10:30 PM |
| 11:00 AM | 11:30 PM |
| 12:00 PM | 12:30 AM (next day) |
| 1:00 PM | 1:30 AM (next day) |
| 2:00 PM | 2:30 AM (next day) |
| 3:00 PM | 3:30 AM (next day) |
| 4:00 PM | 4:30 AM (next day) |
| 5:00 PM | 5:30 AM (next day) |
| 6:00 PM | 6:30 AM (next day) |
| 7:00 PM | 7:30 AM (next day) |
| 8:00 PM | 8:30 AM (next day) |
| 9:00 PM | 9:30 AM (next day) |
| 10:00 PM | 10:30 AM (next day) |
| 11:00 PM | 11:30 AM (next day) |
India Standard Time is a fixed UTC+5:30 offset. Combined with San Francisco's UTC-8 (or UTC-7 during daylight saving), the gap works out to 13.5 or 12.5 hours rather than a round number.
Barely any. With an offset close to 12-13 hours, a standard 9-to-5 day in one city falls almost entirely outside the other's working hours, so most collaboration happens asynchronously.
Early morning in San Francisco (around 6-8am) lines up with the very end of the working day in Bangalore, which is usually the narrowest usable window for a live call.
Yes. Bengaluru is the official name adopted in 2014, while Bangalore remains the more common name in everyday and international use, including for SF (San Francisco) comparisons like this one. Both refer to the same Asia/Kolkata time zone.