Calgary Time to JST Converter
JST is 15 hours ahead of MDT. 9:00 AM MDT = 12:00 AM JST (next day).
JST is 15 hours ahead of MDT at the moment. To convert Calgary Time to JST, add 15 hours to the Calgary Time time: 9:00 AM MDT = 12:00 AM JST (next day).
Calgary Time (Calgary time) is used in Calgary, Canada. JST (Japan Time) is used in Japan.
Calgary Time to JST time conversion table
Calgary Time to JST on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Calgary Time | JST | Day |
|---|---|---|
| 12:00 AM MDT | 3:00 PM JST | — |
| 1:00 AM MDT | 4:00 PM JST | — |
| 2:00 AM MDT | 5:00 PM JST | — |
| 3:00 AM MDT | 6:00 PM JST | — |
| 4:00 AM MDT | 7:00 PM JST | — |
| 5:00 AM MDT | 8:00 PM JST | — |
| 6:00 AM MDT | 9:00 PM JST | — |
| 7:00 AM MDT | 10:00 PM JST | night |
| 8:00 AM MDT | 11:00 PM JST | night |
| 9:00 AM MDT | 12:00 AM JST | next day |
| 10:00 AM MDT | 1:00 AM JST | next day |
| 11:00 AM MDT | 2:00 AM JST | next day |
| 12:00 PM MDT | 3:00 AM JST | next day |
| 1:00 PM MDT | 4:00 AM JST | next day |
| 2:00 PM MDT | 5:00 AM JST | next day |
| 3:00 PM MDT | 6:00 AM JST | next day |
| 4:00 PM MDT | 7:00 AM JST | next day |
| 5:00 PM MDT | 8:00 AM JST | next day |
| 6:00 PM MDT | 9:00 AM JST | next day |
| 7:00 PM MDT | 10:00 AM JST | next day |
| 8:00 PM MDT | 11:00 AM JST | next day |
| 9:00 PM MDT | 12:00 PM JST | next day |
| 10:00 PM MDT | 1:00 PM JST | next day |
| 11:00 PM MDT | 2:00 PM JST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert Calgary Time to JST
Add 15 hours to the Calgary Time time to get JST.
Example: 9:00 AM MDT = 12:00 AM JST (next day).
Across midnight: 10:00 PM MDT = 1:00 PM JST (next day). The date changes, so always check the day as well as the hour.
Time difference between Calgary Time and JST
The time difference between Calgary Time and JST is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 31 Dec 2025 – 7 Mar 2026: JST is 16 hours ahead of Calgary Time.
- 8 Mar 2026 – 30 Dec 2026: JST is 15 hours ahead of Calgary Time.
Calgary Time and JST during daylight saving time
- Calgary Time does not observe daylight saving time; it stays on UTC−6 all year.
- JST does not observe daylight saving time; it stays on UTC+9 all year.
Best time for a meeting between Calgary Time and JST
Calgary Time and JST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM MDT, which is 10:00 PM JST.
Calgary Time to JST FAQ
What is the time difference between Calgary Time and JST?
Right now JST is 15 hours ahead of MDT. The gap changes 2 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM Calgary Time in JST?
9:00 AM MDT is 12:00 AM JST (next day).
What is 12 PM (noon) Calgary Time in JST?
12:00 PM MDT is 3:00 AM JST (next day).
Is JST ahead of or behind Calgary Time?
JST is 15 hours ahead of MDT, so it is later in JST than in Calgary Time.
Does Calgary Time change for daylight saving time?
No. Calgary Time stays on the same offset all year, so conversions never shift for daylight saving time.
Does JST change for daylight saving time?
No. JST stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between Calgary Time and JST?
Calgary Time and JST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM MDT, which is 10:00 PM JST.
Related conversions
Convert JST to Calgary Time
Convert Calgary Time to other time zones
Convert other time zones to JST
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.