Houston Time to IST Converter
IST is 11 hours 30 minutes ahead of CST. 9:00 AM CST = 8:30 PM IST.
IST is 11 hours 30 minutes ahead of CST at the moment. To convert Houston Time to IST, add 11 hours 30 minutes to the Houston Time time: 9:00 AM CST = 8:30 PM IST.
Houston Time (Houston time) is used in Houston, USA. IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time).
IST here means India Standard Time, not Irish or Israel Standard Time.
Houston Time to IST time conversion table
Houston Time to IST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Houston Time | IST | Day |
|---|---|---|
| 12:00 AM CST | 11:30 AM IST | — |
| 1:00 AM CST | 12:30 PM IST | — |
| 2:00 AM CST | 1:30 PM IST | — |
| 3:00 AM CST | 2:30 PM IST | — |
| 4:00 AM CST | 3:30 PM IST | — |
| 5:00 AM CST | 4:30 PM IST | — |
| 6:00 AM CST | 5:30 PM IST | — |
| 7:00 AM CST | 6:30 PM IST | — |
| 8:00 AM CST | 7:30 PM IST | — |
| 9:00 AM CST | 8:30 PM IST | — |
| 10:00 AM CST | 9:30 PM IST | — |
| 11:00 AM CST | 10:30 PM IST | night |
| 12:00 PM CST | 11:30 PM IST | night |
| 1:00 PM CST | 12:30 AM IST | next day |
| 2:00 PM CST | 1:30 AM IST | next day |
| 3:00 PM CST | 2:30 AM IST | next day |
| 4:00 PM CST | 3:30 AM IST | next day |
| 5:00 PM CST | 4:30 AM IST | next day |
| 6:00 PM CST | 5:30 AM IST | next day |
| 7:00 PM CST | 6:30 AM IST | next day |
| 8:00 PM CST | 7:30 AM IST | next day |
| 9:00 PM CST | 8:30 AM IST | next day |
| 10:00 PM CST | 9:30 AM IST | next day |
| 11:00 PM CST | 10:30 AM IST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert Houston Time to IST
Add 11 hours 30 minutes to the Houston Time time to get IST.
Example: 9:00 AM CST = 8:30 PM IST.
Across midnight: 10:00 PM CST = 9:30 AM IST (next day). The date changes, so always check the day as well as the hour.
Time difference between Houston Time and IST
The time difference between Houston Time and IST is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 31 Dec 2025 – 7 Mar 2026: IST is 11 hours 30 minutes ahead of Houston Time.
- 8 Mar 2026 – 31 Oct 2026: IST is 10 hours 30 minutes ahead of Houston Time.
- 1 Nov 2026 – 30 Dec 2026: IST is 11 hours 30 minutes ahead of Houston Time.
Houston Time and IST during daylight saving time
- Houston Time next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from CST (UTC−6) to CDT (UTC−5).
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
Best time for a meeting between Houston Time and IST
Houston Time and IST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM CST, which is 6:30 PM IST.
Houston Time to IST FAQ
What is the time difference between Houston Time and IST?
Right now IST is 11 hours 30 minutes ahead of CST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM Houston Time in IST?
9:00 AM CST is 8:30 PM IST.
What is 12 PM (noon) Houston Time in IST?
12:00 PM CST is 11:30 PM IST.
Is IST ahead of or behind Houston Time?
IST is 11 hours 30 minutes ahead of CST, so it is later in IST than in Houston Time.
Does Houston Time change for daylight saving time?
Yes. Houston Time next changes on 14 Mar 2027, when clocks go forward one hour from CST to CDT.
Does IST change for daylight saving time?
No. IST stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between Houston Time and IST?
Houston Time and IST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM CST, which is 6:30 PM IST.
Related conversions
Convert IST to Houston Time
Convert Houston Time to other time zones
Convert other time zones to IST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.