Time difference
Denver to Kolkata Time Difference
Kolkata is 11 hours and 30 minutes ahead of Denver — when it's 12:00 PM in Denver, it's 11:30 PM in Kolkata. (Denver (America/Denver, MDT); Kolkata (Asia/Kolkata, IST).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.
Kolkata is 11 hours and 30 minutes ahead of Denver. Standard 9 AM–5 PM business hours in Denver and Kolkata do not overlap, so a live call needs one side outside normal hours. Clocks change on November 1, 2026, which briefly shifts the gap between Denver and Kolkata — the converter on this page always reflects the correct offset for the date you pick.
- When it's 9:00 AM in Denver, it's 8:30 PM in Kolkata.
- When it's 9:00 AM in Kolkata, it's 9:30 PM the previous day in Denver.
Kolkata is currently 11 hours and 30 minutes ahead of Denver.
Interactive converter
12:00PM
--:----
Best times to meet
Standard 9 AM – 5 PM hours in Denver and Kolkata do not overlap. The least-bad options are an early start in one city or a late evening call in the other — for example a 7–8 AM meeting in Denver, or a 6–8 PM meeting in Kolkata.
Quick conversion table
| Denver | Kolkata |
|---|---|
| 12 AM | 11:30 AM |
| 1 AM | 12:30 PM |
| 2 AM | 1:30 PM |
| 3 AM | 2:30 PM |
| 4 AM | 3:30 PM |
| 5 AM | 4:30 PM |
| 6 AM | 5:30 PM |
| 7 AM | 6:30 PM |
| 8 AM | 7:30 PM |
| 9 AM | 8:30 PM |
| 10 AM | 9:30 PM |
| 11 AM | 10:30 PM |
| 12 PM | 11:30 PM |
| 1 PM | 12:30 AM (next day) |
| 2 PM | 1:30 AM (next day) |
| 3 PM | 2:30 AM (next day) |
| 4 PM | 3:30 AM (next day) |
| 5 PM | 4:30 AM (next day) |
| 6 PM | 5:30 AM (next day) |
| 7 PM | 6:30 AM (next day) |
| 8 PM | 7:30 AM (next day) |
| 9 PM | 8:30 AM (next day) |
| 10 PM | 9:30 AM (next day) |
| 11 PM | 10:30 AM (next day) |
Daylight saving
On November 1, 2026, Denver shifts for daylight saving. After that, Kolkata will be 12 hours and 30 minutes ahead of Denver (currently 11 hours and 30 minutes ahead of Denver). The converter and the tables above always reflect the correct offset for the date you pick.
- Denver is currently observing daylight saving time.
- Kolkata does not observe daylight saving time.
Frequently asked questions
- Is Kolkata ahead of or behind Denver?
- Kolkata is 11 hours and 30 minutes ahead of Denver.
- How many hours ahead of Denver is Kolkata?
- Kolkata is 11 hours and 30 minutes ahead of Denver.
- What time is 9 AM in Denver in Kolkata?
- 9:00 AM in Denver is 8:30 PM in Kolkata.
- What time is noon in Denver in Kolkata?
- 12:00 PM in Denver is 11:30 PM in Kolkata.
- What time is 5 PM in Denver in Kolkata?
- 5:00 PM in Denver is 4:30 AM the next day in Kolkata. Useful for end-of-day handoffs between the two offices.
- What time is 3 PM in Denver in Kolkata?
- 3:00 PM in Denver is 2:30 AM the next day in Kolkata.
- Is Denver currently observing daylight saving time?
- Denver is currently observing daylight saving time (summer time).
- Is Kolkata currently observing daylight saving time?
- Kolkata does not observe daylight saving time — its UTC offset stays the same all year.
- Do Denver and Kolkata observe daylight saving?
- On November 1, 2026, Denver shifts for daylight saving. After that, Kolkata will be 12 hours and 30 minutes ahead of Denver (currently 11 hours and 30 minutes ahead of Denver). The converter and the tables above always reflect the correct offset for the date you pick.
- When is the best time to call Kolkata from Denver?
- Denver and Kolkata business hours don't overlap. The closest options are early mornings in Denver or late evenings, when one side stretches outside 9–5.
- When is the best time to call Denver from Kolkata?
- Kolkata and Denver business hours don't overlap. The closest options are early mornings in Kolkata or late evenings, when one side stretches outside 9–5.
- Denver (MDT) to Kolkata (IST) — how do I convert quickly?
- Add 11 hours and 30 minutes to Denver local time to get Kolkata local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.
Other conversions
- Denver to New York
- Denver to London
- Denver to Tokyo
- Denver to Dubai
- Denver to Singapore
- Denver to Los Angeles
- Denver to Sydney
- Denver to Paris
- Denver to Mumbai
- Denver to Hong Kong