Houston to Kolkata Time Converter
Kolkata is 11 hours 30 minutes ahead of Houston right now. 9:00 AM in Houston is 8:30 PM in Kolkata.
Time now: Houston and Kolkata
Kolkata is 11 hours 30 minutes ahead of Houston right now. The gap is not fixed: it is 10 hours 30 minutes at some times of the year and 11 hours 30 minutes at others, because at least one of them changes its clocks for daylight saving time.
Houston and Kolkata are about 14,183 km (8,813 miles) apart in a straight line. Right now Houston is on CST (UTC-06:00) and Kolkata is on IST (UTC+05:30).
Houston to Kolkata conversion table
Every hour of the day, using today's time difference.
| Houston | Kolkata |
|---|---|
| 12:00 AM | 11:30 AM |
| 1:00 AM | 12:30 PM |
| 2:00 AM | 1:30 PM |
| 3:00 AM | 2:30 PM |
| 4:00 AM | 3:30 PM |
| 5:00 AM | 4:30 PM |
| 6:00 AM | 5:30 PM |
| 7:00 AM | 6:30 PM |
| 8:00 AM | 7:30 PM |
| 9:00 AM | 8:30 PM |
| 10:00 AM | 9:30 PM |
| 11:00 AM | 10:30 PM |
| 12:00 PM | 11:30 PM |
| 1:00 PM | 12:30 AMnext day |
| 2:00 PM | 1:30 AMnext day |
| 3:00 PM | 2:30 AMnext day |
| 4:00 PM | 3:30 AMnext day |
| 5:00 PM | 4:30 AMnext day |
| 6:00 PM | 5:30 AMnext day |
| 7:00 PM | 6:30 AMnext day |
| 8:00 PM | 7:30 AMnext day |
| 9:00 PM | 8:30 AMnext day |
| 10:00 PM | 9:30 AMnext day |
| 11:00 PM | 10:30 AMnext day |
Best time to meet between Houston and Kolkata
There is no overlap between 9 AM and 6 PM in both places.
If both sides can be flexible (7 AM – 10 PM):
- 7:00 AM – 11:00 AM Houston = 6:30 PM – 10:30 PM Kolkata
- 8:00 PM – 10:00 PM Houston = 7:30 AM – 9:30 AM Kolkata
The time difference changes during the year because of daylight saving time, so these windows shift by an hour at other times.
Does the time difference between Houston and Kolkata change?
Yes. Right now Kolkata is 11 hours 30 minutes ahead of Houston. These are the dates in the next 12 months when the gap changes:
- Sunday, 14 March 2027: Houston moves its clocks forward. Kolkata is 10 hours 30 minutes ahead of Houston from then (it was 11 hours 30 minutes before).
- Sunday, 7 November 2027: Houston moves its clocks back. Kolkata is 11 hours 30 minutes ahead of Houston from then (it was 10 hours 30 minutes before).
Office hours in each other's time
- 9 AM to 6 PM in Houston is 8:30 PM to 5:30 AM (next day) in Kolkata.
- 9 AM to 6 PM in Kolkata is 9:30 PM (previous day) to 6:30 AM in Houston.
Based on today's clock settings.
Frequently asked questions
What is the time difference between Houston and Kolkata?
Kolkata is 11 hours 30 minutes ahead of Houston right now. The gap is not fixed: it is 10 hours 30 minutes at some times of the year and 11 hours 30 minutes at others, because at least one of them changes its clocks for daylight saving time.
How do I convert Houston to Kolkata?
Add 11 hours 30 minutes to the Houston time to get the Kolkata time (at today's difference). 9:00 AM in Houston is 8:30 PM in Kolkata. Or use the converter above and pick any date and time.
What is the current time in Kolkata?
It is 6:40 AM in Kolkata on Tuesday, November 10 (the converter above shows it live). At the same moment it is 7:10 PM in Houston.
Does the time difference between Houston and Kolkata change during the year?
Yes. Right now Kolkata is 11 hours 30 minutes ahead of Houston. Over the next 12 months the gap changes 2 times: Sunday, 14 March 2027: Houston moves its clocks forward. Kolkata is 10 hours 30 minutes ahead of Houston from then (it was 11 hours 30 minutes before). Sunday, 7 November 2027: Houston moves its clocks back. Kolkata is 11 hours 30 minutes ahead of Houston from then (it was 10 hours 30 minutes before).
What is the best time for a meeting between Houston and Kolkata?
The two places have no shared working hours (9 AM – 6 PM). The nearest option is 7:00 AM – 11:00 AM Houston = 6:30 PM – 10:30 PM Kolkata.