Denver zone
MDT (GMT-6)
Kolkata zone
GMT+5:30 (GMT+5:30)
Difference
11h 30m ahead of Denver
Business overlap
No 9-5 overlap
Working hours overlap
Each cell is one hour in Denver. Filled cells mark when 9 AM – 5 PM in Denver and Kolkata both apply.
0 hours per day
- Denver
- GMT-6
- Kolkata
- GMT+5:30
- Difference
- +11h 30m
- Business overlap
- 0h
Hour-by-hour conversion
Each row shows the matching local time in Kolkata for an hour in Denver.
| Denver | Kolkata | Day | Window |
|---|---|---|---|
| 12:00 AM | 11:30 AM | same day | — |
| 1:00 AM | 12:30 PM | same day | — |
| 2:00 AM | 1:30 PM | same day | — |
| 3:00 AM | 2:30 PM | same day | — |
| 4:00 AM | 3:30 PM | same day | — |
| 5:00 AM | 4:30 PM | same day | — |
| 6:00 AM | 5:30 PM | same day | — |
| 7:00 AM | 6:30 PM | same day | — |
| 8:00 AM | 7:30 PM | same day | — |
| 9:00 AM | 8:30 PM | same day | — |
| 10:00 AM | 9:30 PM | same day | — |
| 11:00 AM | 10:30 PM | same day | — |
| 12:00 PM | 11:30 PM | same day | — |
| 1:00 PM | 12:30 AM | next day | — |
| 2:00 PM | 1:30 AM | next day | — |
| 3:00 PM | 2:30 AM | next day | — |
| 4:00 PM | 3:30 AM | next day | — |
| 5:00 PM | 4:30 AM | next day | — |
| 6:00 PM | 5:30 AM | next day | — |
| 7:00 PM | 6:30 AM | next day | — |
| 8:00 PM | 7:30 AM | next day | — |
| 9:00 PM | 8:30 AM | next day | — |
| 10:00 PM | 9:30 AM | next day | — |
| 11:00 PM | 10:30 AM | next day | — |
Best meeting windows
Standard 9 AM – 5 PM hours in Denver and Kolkata do not overlap. Plan calls for early Denver morning or late Denver evening, and rotate the burden between sides.
Tighter overlap is achievable by having the side with later working hours start earlier, or by treating the first and last hours of each side as flexible. The bar above marks every hour where both cities sit inside a 9 AM – 5 PM window.
About converting Denver time to Kolkata time
Denver follows the America/Denver time zone (currently MDT, GMT-6), while Kolkata follows Asia/Kolkata (currently GMT+5:30, GMT+5:30). Kolkata is 11h 30m ahead of Denver right now.
Denver observes daylight saving time, while Kolkata does not. The offset between the two cities changes by one hour at the daylight saving transitions.
Daylight saving transitions in 2026
Denver
- Spring forward · Sunday, March 8, 2026
- Fall back · Sunday, November 1, 2026
Kolkata
Does not observe daylight saving time.
Reverse this conversion
Kolkata to Denver
Open the converter
Plan a meeting between Denver and Kolkata
More conversions from Denver
Frequently asked questions
- How many hours is Denver from Kolkata?
- Kolkata is 11h 30m ahead of Denver right now.
- What time is 9:00 AM Denver in Kolkata?
- 9:00 AM in Denver is 8:30 PM in Kolkata.
- What time is 5:00 PM Denver in Kolkata?
- 5:00 PM in Denver is 4:30 AM (next day) in Kolkata.
- When do Denver and Kolkata business hours overlap?
- Standard 9 AM - 5 PM working hours in Denver and Kolkata do not overlap. You will need an early or late call.
- Does daylight saving time change the difference between Denver and Kolkata?
- Denver observes daylight saving time while Kolkata does not, so the offset between them changes by one hour twice a year.
Local time page
Time in Denver
Local time page
Time in Kolkata