Offset
The time difference between Mumbai and San Antonio is 10.5 hours.
Mumbai (IST) is ahead of San Antonio (CDT).
IST: UTC+5:30
CDT: UTC-5
San Antonio is currently observing daylight saving time; Mumbai is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Mumbai and San Antonio don't overlap on the same weekday. San Antonio is 10 hours behind Mumbai.
With some flexibility, there’s a workable window outside standard hours:
- 6 PM–8 PM in Mumbai (7 AM–9 AM in San Antonio) — suggest 7:00 PM Mumbai (8:30 AM San Antonio).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
Mumbai uses India Standard Time (IST). To call India, dial +91.
San Antonio uses Central Time (CST, or CDT). To call United States, dial +1.
San Antonio is approximately 9,050 miles north of Mumbai.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Mumbai | San Antonio | Day |
|---|---|---|
| 12:00 am | 1:30 pm | -1 day |
| 1:00 am | 2:30 pm | -1 day |
| 2:00 am | 3:30 pm | -1 day |
| 3:00 am | 4:30 pm | -1 day |
| 4:00 am | 5:30 pm | -1 day |
| 5:00 am | 6:30 pm | -1 day |
| 6:00 am | 7:30 pm | -1 day |
| 7:00 am | 8:30 pm | -1 day |
| 8:00 am | 9:30 pm | -1 day |
| 9:00 am | 10:30 pm | -1 day |
| 10:00 am | 11:30 pm | -1 day |
| 11:00 am | 12:30 am | Same day |
| 12:00 pm | 1:30 am | Same day |
| 1:00 pm | 2:30 am | Same day |
| 2:00 pm | 3:30 am | Same day |
| 3:00 pm | 4:30 am | Same day |
| 4:00 pm | 5:30 am | Same day |
| 5:00 pm | 6:30 am | Same day |
| 6:00 pm | 7:30 am | Same day |
| 7:00 pm | 8:30 am | Same day |
| 8:00 pm | 9:30 am | Same day |
| 9:00 pm | 10:30 am | Same day |
| 10:00 pm | 11:30 am | Same day |
| 11:00 pm | 12:30 pm | Same day |
Daylight saving time
San Antonio observes daylight saving time; Mumbai does not. The offset between the two zones changes when San Antonio transitions: on Sunday, November 1, 2026, clocks fall back from CDT to CST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 6:12 AM
- Sunset
- 7:19 PM
- Day length
- 13h 7m
- Sunrise
- 6:48 AM
- Sunset
- 8:34 PM
- Day length
- 13h 45m
Daylight overlap: 51m — 6:12 AM–7:04 AM in Mumbai (7:42 PM–8:34 PM in San Antonio). Both locations are in daylight during this window.
Cities in these zones
Other cities in India Standard Time
Other cities in Central Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in India Standard Time
- BOM
- NMI
- DEL
- BLR
- HYD
- AMD
- MAA
- CCU
- STV
- PNQ
Airports in Central Time
- GYY
- MDW
- ORD
- HOU
- IAH
- SAT
- DAL
- DFW
- AUS
- BNA
Related conversions
Common conversions
- What is 9:00 am Mumbai in San Antonio?
- 9:00 am Mumbai is 10:30 pm San Antonio, the previous day.
- What is 12:00 pm Mumbai in San Antonio?
- 12:00 pm Mumbai is 1:30 am San Antonio.
- What is 12:30 pm Mumbai in San Antonio?
- 12:30 pm Mumbai is 2:00 am San Antonio.
- What is 2:00 pm Mumbai in San Antonio?
- 2:00 pm Mumbai is 3:30 am San Antonio.
- What is 5:00 pm Mumbai in San Antonio?
- 5:00 pm Mumbai is 6:30 am San Antonio.
- What is 11:30 pm Mumbai in San Antonio?
- 11:30 pm Mumbai is 1:00 pm San Antonio.