Sunnyvale to Kolkata Time

Sunnyvale is 12 hours 30 minutes behind Kolkata.

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Tap a city name to search and change it (partial names work). Drag the timeline (12 hours in view, scrolls forever). Keyboard: ← → , PgUp / PgDn 1 hour, Home = now.

Sunnyvale time to Kolkata time

Sunnyvale is 12 hours 30 minutes behind Kolkata. When it is 9:00 AM in Sunnyvale, USA, it is 9:30 PM in Kolkata, India. Regular 9 AM to 6 PM working hours do not overlap. The closest workable window, between 7 AM and 10 PM in both cities, is 6:30 PM to 10:00 PM in Sunnyvale (7:00 AM to 10:30 AM in Kolkata).

Time difference

12 hours 30 minutes (Sunnyvale behind). Sunnyvale uses PDT; Kolkata uses IST.

Working-hours overlap

No shared 9 AM to 6 PM hours.

Daylight saving

Next change: Sun, Nov 1, 2026 (Sunnyvale).

Sunnyvale to Kolkata time conversion table

Times for Fri, Oct 9, 2026. Highlighted rows fall within 9 AM to 6 PM in both cities. Drag the live converter above for any other date.
Sunnyvale (PDT)Kolkata (IST)
12:00 AM12:30 PM
1:00 AM1:30 PM
2:00 AM2:30 PM
3:00 AM3:30 PM
4:00 AM4:30 PM
5:00 AM5:30 PM
6:00 AM6:30 PM
7:00 AM7:30 PM
8:00 AM8:30 PM
9:00 AM9:30 PM
10:00 AM10:30 PM
11:00 AM11:30 PM
12:00 PM12:30 AM (next day)
1:00 PM1:30 AM (next day)
2:00 PM2:30 AM (next day)
3:00 PM3:30 AM (next day)
4:00 PM4:30 AM (next day)
5:00 PM5:30 AM (next day)
6:00 PM6:30 AM (next day)
7:00 PM7:30 AM (next day)
8:00 PM8:30 AM (next day)
9:00 PM9:30 AM (next day)
10:00 PM10:30 AM (next day)
11:00 PM11:30 AM (next day)

Daylight saving time

On Sun, Nov 1, 2026, Sunnyvale switches from PDT to PST, so the difference becomes 13 hours 30 minutes (Sunnyvale behind). On Sun, Mar 14, 2027, Sunnyvale switches from PST to PDT, so the difference becomes 12 hours 30 minutes (Sunnyvale behind).

How to use the meeting time converter

  1. Select either city name and search by city, time zone, abbreviation, or UTC offset.
  2. Drag the horizontal timeline, or use the arrow and Page Up/Page Down keys, to choose a moment.
  3. Read the matching time and date for both locations and use the color bands to compare working hours.

Frequently asked questions

What is the time difference between Sunnyvale and Kolkata?

Sunnyvale is 12 hours 30 minutes behind Kolkata. Sunnyvale currently uses PDT and Kolkata uses IST.

When it is 9 AM in Sunnyvale, what time is it in Kolkata?

It is 9:30 PM in Kolkata.

What is the best time for a meeting between Sunnyvale and Kolkata?

Regular 9 AM to 6 PM working hours do not overlap. The closest workable window, between 7 AM and 10 PM in both cities, is 6:30 PM to 10:00 PM in Sunnyvale (7:00 AM to 10:30 AM in Kolkata).

Does daylight saving time affect Sunnyvale and Kolkata?

On Sun, Nov 1, 2026, Sunnyvale switches from PDT to PST, so the difference becomes 13 hours 30 minutes (Sunnyvale behind). On Sun, Mar 14, 2027, Sunnyvale switches from PST to PDT, so the difference becomes 12 hours 30 minutes (Sunnyvale behind).

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