There is no overlap between 09:00–18:00 working days in these two places.
How many hours is MST behind HKT?
As abbreviations, HKT is always 15 hours ahead of MST: MST is UTC−7 and HKT is UTC+8. To convert, add 15 hours.
When the MST to HKT time difference changes
For most of the year HKT is 14 hours ahead of MST. From 1 November to 31 December 2026, HKT is 15 hours ahead of MST instead, because the two places change their clocks on different dates. Meetings booked by the usual gap land an hour off in those weeks.
Dates
HKT vs MST
Length
1 November 2026 to 31 December 2026
15 hours ahead
61 days
1 January 2027 to 13 March 2027
15 hours ahead
72 days
14 March 2027 to 6 November 2027
14 hours ahead
238 days
7 November 2027 to 31 December 2027
15 hours ahead
55 days
When MST and HKT are both at work
When HKT is 14 hours ahead of MST: no shared 09:00 to 17:00 hours; try 17:00 in MST (07:00 in HKT).
When HKT is 15 hours ahead of MST: no shared 09:00 to 17:00 hours; try 17:00 in MST (08:00 in HKT).
Frequently asked questions about MST and HKT time
How many hours ahead is HKT of MST?
HKT (UTC+8) is 15 hours ahead of MST (UTC−7).
Does the time difference between MST and HKT change?
Yes. It is usually 14 hours ahead, but changes when one side moves its clocks: 15 hours ahead from 1 November to 31 December 2026; 15 hours ahead from 1 January to 13 March 2027.