Honolulu zone
HST (GMT-10)
Kolkata zone
GMT+5:30 (GMT+5:30)
Difference
15h 30m ahead of Honolulu
Business overlap
No 9-5 overlap
Working hours overlap
Each cell is one hour in Honolulu. Filled cells mark when 9 AM – 5 PM in Honolulu and Kolkata both apply.
0 hours per day
- Honolulu
- GMT-10
- Kolkata
- GMT+5:30
- Difference
- +15h 30m
- Business overlap
- 0h
Hour-by-hour conversion
Each row shows the matching local time in Kolkata for an hour in Honolulu.
| Honolulu | Kolkata | Day | Window |
|---|---|---|---|
| 12:00 AM | 3:30 PM | same day | — |
| 1:00 AM | 4:30 PM | same day | — |
| 2:00 AM | 5:30 PM | same day | — |
| 3:00 AM | 6:30 PM | same day | — |
| 4:00 AM | 7:30 PM | same day | — |
| 5:00 AM | 8:30 PM | same day | — |
| 6:00 AM | 9:30 PM | same day | — |
| 7:00 AM | 10:30 PM | same day | — |
| 8:00 AM | 11:30 PM | same day | — |
| 9:00 AM | 12:30 AM | next day | — |
| 10:00 AM | 1:30 AM | next day | — |
| 11:00 AM | 2:30 AM | next day | — |
| 12:00 PM | 3:30 AM | next day | — |
| 1:00 PM | 4:30 AM | next day | — |
| 2:00 PM | 5:30 AM | next day | — |
| 3:00 PM | 6:30 AM | next day | — |
| 4:00 PM | 7:30 AM | next day | — |
| 5:00 PM | 8:30 AM | next day | — |
| 6:00 PM | 9:30 AM | next day | — |
| 7:00 PM | 10:30 AM | next day | — |
| 8:00 PM | 11:30 AM | next day | — |
| 9:00 PM | 12:30 PM | next day | — |
| 10:00 PM | 1:30 PM | next day | — |
| 11:00 PM | 2:30 PM | next day | — |
Best meeting windows
Standard 9 AM – 5 PM hours in Honolulu and Kolkata do not overlap. Plan calls for early Honolulu morning or late Honolulu 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 Honolulu time to Kolkata time
Honolulu follows the Pacific/Honolulu time zone (currently HST, GMT-10), while Kolkata follows Asia/Kolkata (currently GMT+5:30, GMT+5:30). Kolkata is 15h 30m ahead of Honolulu right now.
Neither city observes daylight saving time, so the offset between them is the same all year.
Reverse this conversion
Kolkata to Honolulu
Open the converter
Plan a meeting between Honolulu and Kolkata
More conversions from Honolulu
Frequently asked questions
- How many hours is Honolulu from Kolkata?
- Kolkata is 15h 30m ahead of Honolulu right now.
- What time is 9:00 AM Honolulu in Kolkata?
- 9:00 AM in Honolulu is 12:30 AM (next day) in Kolkata.
- What time is 5:00 PM Honolulu in Kolkata?
- 5:00 PM in Honolulu is 8:30 AM (next day) in Kolkata.
- When do Honolulu and Kolkata business hours overlap?
- Standard 9 AM - 5 PM working hours in Honolulu and Kolkata do not overlap. You will need an early or late call.
- Does daylight saving time change the difference between Honolulu and Kolkata?
- Neither Honolulu nor Kolkata observes daylight saving time, so the offset between them is constant year-round.
Local time page
Time in Honolulu
Local time page
Time in Kolkata