NST to MST
Convert Newfoundland Time — St. John's to Arizona Time — Phoenix (no DST) — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in St. John's, it's 4:30 AM in Phoenix. Phoenix is 4½ hours behind St. John's. Use the converter above to turn any NST time into MST, or scan the hour-by-hour table below for the full day.
NST to MST at a glance
Planning a meeting between St. John's and Phoenix
Planning a call between St. John's and Phoenix? The best overlap during a standard 9-to-5 workday runs 1:30 PM–5:00 PM NST (9:00 AM–12:30 PM MST). Aim for that window to reach both sides during business hours.
Hour-by-hour: St. John's to Phoenix
A full day mapped from NST to MST.
Frequently asked
Is Phoenix ahead of or behind St. John's?
Phoenix is 4½ hours behind St. John's.
What is 12:00 PM NST in MST?
12:00 PM in St. John's is 7:30 AM in Phoenix.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so NST and MST automatically reflect the correct daylight-saving offset for the current date.