Time difference
Kolkata to Seattle Time Difference
Seattle is 12 hours and 30 minutes behind Kolkata — when it's 12:00 PM in Kolkata, it's 11:30 PM the previous day in Seattle. (Kolkata (Asia/Kolkata, IST); Seattle (America/Los_Angeles, PDT).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.
Seattle is 12 hours and 30 minutes behind Kolkata. Standard 9 AM–5 PM business hours in Kolkata and Seattle 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 Kolkata and Seattle — the converter on this page always reflects the correct offset for the date you pick.
- When it's 9:00 AM in Kolkata, it's 8:30 PM the previous day in Seattle.
- When it's 9:00 AM in Seattle, it's 9:30 PM in Kolkata.
Seattle is currently 12 hours and 30 minutes behind Kolkata.
Interactive converter
12:00PM
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Best times to meet
Standard 9 AM – 5 PM hours in Kolkata and Seattle 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 Kolkata, or a 6–8 PM meeting in Seattle.
Quick conversion table
| Kolkata | Seattle |
|---|---|
| 12 AM | 11:30 AM (prev day) |
| 1 AM | 12:30 PM (prev day) |
| 2 AM | 1:30 PM (prev day) |
| 3 AM | 2:30 PM (prev day) |
| 4 AM | 3:30 PM (prev day) |
| 5 AM | 4:30 PM (prev day) |
| 6 AM | 5:30 PM (prev day) |
| 7 AM | 6:30 PM (prev day) |
| 8 AM | 7:30 PM (prev day) |
| 9 AM | 8:30 PM (prev day) |
| 10 AM | 9:30 PM (prev day) |
| 11 AM | 10:30 PM (prev day) |
| 12 PM | 11:30 PM (prev day) |
| 1 PM | 12:30 AM |
| 2 PM | 1:30 AM |
| 3 PM | 2:30 AM |
| 4 PM | 3:30 AM |
| 5 PM | 4:30 AM |
| 6 PM | 5:30 AM |
| 7 PM | 6:30 AM |
| 8 PM | 7:30 AM |
| 9 PM | 8:30 AM |
| 10 PM | 9:30 AM |
| 11 PM | 10:30 AM |
Daylight saving
On November 1, 2026, Seattle shifts for daylight saving. After that, Seattle will be 13 hours and 30 minutes behind Kolkata (currently 12 hours and 30 minutes behind Kolkata). The converter and the tables above always reflect the correct offset for the date you pick.
- Kolkata does not observe daylight saving time.
- Seattle is currently observing daylight saving time.
Frequently asked questions
- Is Seattle ahead of or behind Kolkata?
- Seattle is 12 hours and 30 minutes behind Kolkata.
- How many hours behind Kolkata is Seattle?
- Seattle is 12 hours and 30 minutes behind Kolkata.
- What time is 9 AM in Kolkata in Seattle?
- 9:00 AM in Kolkata is 8:30 PM the previous day in Seattle.
- What time is noon in Kolkata in Seattle?
- 12:00 PM in Kolkata is 11:30 PM the previous day in Seattle.
- What time is 5 PM in Kolkata in Seattle?
- 5:00 PM in Kolkata is 4:30 AM in Seattle. Useful for end-of-day handoffs between the two offices.
- What time is 3 PM in Kolkata in Seattle?
- 3:00 PM in Kolkata is 2:30 AM in Seattle.
- Is Kolkata currently observing daylight saving time?
- Kolkata does not observe daylight saving time — its UTC offset stays the same all year.
- Is Seattle currently observing daylight saving time?
- Seattle is currently observing daylight saving time (summer time).
- Do Kolkata and Seattle observe daylight saving?
- On November 1, 2026, Seattle shifts for daylight saving. After that, Seattle will be 13 hours and 30 minutes behind Kolkata (currently 12 hours and 30 minutes behind Kolkata). The converter and the tables above always reflect the correct offset for the date you pick.
- When is the best time to call Seattle from Kolkata?
- Kolkata and Seattle business hours don't overlap. The closest options are early mornings in Kolkata or late evenings, when one side stretches outside 9–5.
- When is the best time to call Kolkata from Seattle?
- Seattle and Kolkata business hours don't overlap. The closest options are early mornings in Seattle or late evenings, when one side stretches outside 9–5.
- Kolkata (IST) to Seattle (PDT) — how do I convert quickly?
- Subtract 12 hours and 30 minutes from Kolkata local time to get Seattle local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.
Other conversions
- Kolkata to New York
- Kolkata to London
- Kolkata to Tokyo
- Dubai to Kolkata
- Kolkata to Singapore
- Kolkata to Los Angeles
- Kolkata to Sydney
- Kolkata to Paris
- Kolkata to Mumbai
- Hong Kong to Kolkata