Convert MST to SST — Time Difference Between Mountain Standard Time and Samoa Standard Time

How to Convert MST to SST

Drag the slider on the MST timeline to pick your time — the SST time updates instantly. You can also click the time display to type a specific hour or pick one from the 15-minute interval dropdown, and use the date picker to check a different day.

What Is the Time Difference Between MST and SST?

Samoa Standard Time (SST) is 4 hours behind Mountain Standard Time (MST). To convert, subtract 4 hours — for example, 9:00 AM MST is 5:00 AM SST.

MST to SST Quick Reference

MST to SST Meeting Planner

Use the color-coded table above to find overlapping work hours between Phoenix and Pago Pago. Amber rows mark daytime hours — pick a slot that falls in amber on both sides for a meeting that works for everyone.

Why Trust This MST to SST Converter?

Timezoney uses the IANA Time Zone Database — the same source that powers your phone and computer — so every conversion handles daylight saving transitions and half-hour offsets automatically.