When it is 09:00 in San Francisco it is 22:30 in Mumbai in January and 21:30 in July. Mumbai is 13 hours 30 minutes ahead San Francisco right now — but it is not constant: the difference is 13 hours 30 minutes ahead in January and 12 hours 30 minutes ahead in July. This page gives the live times in both cities, the overlap between their working days, the daylight saving dates that move the difference, and the best meeting windows.
Try the tool: Time Zone Converter — convert any time between San Francisco and Mumbai, with the offset for the date you pick.
Live times in San Francisco and Mumbai
The two cities side by side. The January column uses the winter offsets (San Francisco UTC−08:00, Mumbai UTC+05:30); the July column uses the summer offsets (San Francisco UTC−07:00, Mumbai UTC+05:30).
| Time in San Francisco | Mumbai in January | Mumbai in July |
|---|---|---|
| 00:00 | 13:30 | 12:30 |
| 06:00 | 19:30 | 18:30 |
| 09:00 | 22:30 | 21:30 |
| 12:00 | 01:30 | 00:30 |
| 15:00 | 04:30 | 03:30 |
| 17:00 | 06:30 | 05:30 |
| 21:00 | 10:30 | 09:30 |
The world clock shows the current time in both cities live, and the individual city pages — time in San Francisco and time in Mumbai — explain each city's time zone, offsets and daylight saving in full.
The time difference between San Francisco and Mumbai
The difference is not constant. In January Mumbai is 13 hours 30 minutes ahead San Francisco; in July it is 12 hours 30 minutes ahead San Francisco. The difference changes on Sunday, 8 March 2026 (from 13 hours 30 minutes ahead to 12 hours 30 minutes ahead) and Sunday, 1 November 2026 (from 12 hours 30 minutes ahead to 13 hours 30 minutes ahead) — those are the dates when one of the two cities changes its clocks and the other does not, or when they change on different days. Between those dates the difference is one value; outside them it is the other.
To convert a time, add the difference: 09:00 in San Francisco is 22:30 in Mumbai in January and 21:30 in July; 17:00 in San Francisco — the end of the working day — is 06:30 in Mumbai in January and 05:30 in July. To go the other way, subtract it: 09:00 in Mumbai is 19:30 in San Francisco in January. The time difference calculator does the arithmetic for any date, and the UTC to Mumbai page gives the full conversion table for Mumbai.
Meeting overlap between San Francisco and Mumbai
The overlap is the hours when both cities are in their working day (09:00–17:00 local time). The table marks the overlapping hours in San Francisco's working day and shows what time they are in Mumbai.
January
| San Francisco time | Mumbai time | Both working? |
|---|---|---|
| 09:00 | 22:30 | No |
| 10:00 | 23:30 | No |
| 11:00 | 00:30 | No |
| 12:00 | 01:30 | No |
| 13:00 | 02:30 | No |
| 14:00 | 03:30 | No |
| 15:00 | 04:30 | Yes |
| 16:00 | 05:30 | Yes |
July
| San Francisco time | Mumbai time | Both working? |
|---|---|---|
| 09:00 | 21:30 | Yes |
| 10:00 | 22:30 | Yes |
| 11:00 | 23:30 | No |
| 12:00 | 00:30 | No |
| 13:00 | 01:30 | No |
| 14:00 | 02:30 | No |
| 15:00 | 03:30 | No |
| 16:00 | 04:30 | No |
In January the overlap is 2 hours: 15:00, 16:00 San Francisco time. In July it is 2 hours: 09:00, 10:00 San Francisco time. The meeting planner finds the overlap for any two cities and any date, and the meeting time finder finds it for a whole team.
Daylight saving in San Francisco and Mumbai
San Francisco observes daylight saving: in 2026 the clocks go forward on 8 March 2026 and back on 1 November 2026, moving the offset from UTC−08:00 to UTC−07:00.
Mumbai does not observe daylight saving, so its offset of UTC+05:30 never changes.
The difference changes on Sunday, 8 March 2026 and Sunday, 1 November 2026 in 2026. On those dates, one city changes its clocks and the other does not — or they change on different days — so the difference moves by an hour. A standing meeting set in one city's local time will land an hour early or late on the other side until the second city catches up. The fix is to set the calendar event in UTC, or to check the overlap again after each change. The individual DST pages — San Francisco DST 2026 and Mumbai DST 2026 — give the exact dates for each city.
Best meeting windows
The best windows in January are 15:00–17:00 in San Francisco (04:30–06:30 in Mumbai). These are the hours inside both working days, so nobody is up early or late. It is a short window, so keep the meeting short and send an agenda in advance.
In July the best windows are 09:00–11:00 in San Francisco (21:30–23:30 in Mumbai) — the same logic, with the July offsets.
Calling and travel notes
When it is 09:00 in San Francisco it is 22:30 in Mumbai in January; when it is 12:00 in San Francisco it is 01:30 in Mumbai; when it is 17:00 in San Francisco it is 06:30 in Mumbai. The difference is 12 hours or more, so the two cities are on different dates for part of the day: when it is Monday morning in San Francisco, it is still Sunday in Mumbai if Mumbai is behind, or already Monday evening if it is ahead. Always state the date as well as the time when you schedule across this pair. Scheduling between the Americas and Asia is the hardest case in time-zone work: the difference is 12 hours or more, so one side's working day is the other's night. The only workable approach is to meet at the edge of the day — early morning in San Francisco and evening in Mumbai, or the reverse — and to keep the meeting short. Rotate the awkward hour week by week, or the same side will always be the one giving up its evening. Record the meeting and share notes, so the side that could not attend can still follow the decision.
Worked conversions
Six conversions, for January (offsets San Francisco UTC−08:00, Mumbai UTC+05:30):
| San Francisco | Mumbai |
|---|---|
| 08:00 | 21:30 |
| 09:00 | 22:30 |
| 12:00 | 01:30 |
| 14:00 | 03:30 |
| 17:00 | 06:30 |
| 20:00 | 09:30 |
In July, add 1 hour to each Mumbai time. For the reverse direction, see Mumbai to San Francisco time.
San Francisco and Mumbai at a glance
| Fact | San Francisco | Mumbai |
|---|---|---|
| Country | United States | India |
| Region | Americas | Asia |
| IANA time zone | America/Los_Angeles |
Asia/Kolkata |
| Standard offset | UTC−08:00 | UTC+05:30 |
| Daylight saving offset | UTC−07:00 | — does not observe |
| Offset in January 2026 | UTC−08:00 | UTC+05:30 |
| Offset in July 2026 | UTC−07:00 | UTC+05:30 |
| Observes daylight saving | Yes | No |
The table is the whole pair in one place. The two numbers that matter most are the January and July offsets: if they are the same in both columns for a city, that city's offset never changes; if they differ, the city observes daylight saving and the difference between the cities moves with it. The individual city pages — time in San Francisco and time in Mumbai — explain each city's time zone, and the DST pages — San Francisco DST 2026 and Mumbai DST 2026 — give the exact change dates.
Frequently asked questions
What is the time difference between San Francisco and Mumbai?
Mumbai is 13 hours 30 minutes ahead San Francisco right now. In January the difference is 13 hours 30 minutes ahead and in July it is 12 hours 30 minutes ahead — it changes with daylight saving.
How do I schedule a recurring meeting between San Francisco and Mumbai?
Pick a time inside the overlap — 15:00–17:00 San Francisco time — and set the calendar event in UTC so it moves correctly when the clocks change. Re-check the overlap in March and October, when the difference moves, and rotate the time if the meeting falls outside someone's working day.
What time is it in Mumbai when it is 09:00 in San Francisco?
It is 22:30 in January and 21:30 in July. The time zone converter gives the answer for any date.
What is the best time for a meeting between San Francisco and Mumbai?
The best windows in January are 15:00–17:00 San Francisco time — inside both working days. In July the windows are 09:00–11:00 San Francisco time.
Does the time difference between San Francisco and Mumbai change during the year?
Yes. It changes on Sunday, 8 March 2026 and Sunday, 1 November 2026 in 2026, when one city changes its clocks and the other does not.
What time is it in San Francisco when it is 09:00 in Mumbai?
It is 19:30 in January and 20:30 in July. See Mumbai to San Francisco time for the full comparison from Mumbai's side.
What are the time zones of San Francisco and Mumbai?
San Francisco is in America/Los_Angeles (UTC−08:00 standard time) and Mumbai is in Asia/Kolkata (UTC+05:30 standard time).
What time is it in San Francisco when it is midnight in Mumbai?
It is 10:30 in San Francisco in January and 11:30 in July — the same day, because San Francisco is ahead of Mumbai. Midnight conversions are the ones that most often land on the wrong date, so always check the date as well as the time.
Sources
- IANA Time Zone Database, via Node.js Intl (
Intl.DateTimeFormatwithtimeZone) — offsets, daylight saving dates and local times in this article were worked out from the IANA database, not typed from memory. - TimeFlow's own time-zone data (
data/cities.ts,data/dst.ts), computed from the IANA database. - TimeFlow's time zone converter and meeting planner — the live tools behind the numbers on this page.
- Time-zone and daylight saving rules are set by governments and can change. For flights, deadlines and meetings that cannot move, confirm the time with an official source.