MST to ARBT Time Converter

Convert Mountain Standard Time (MST) to Arabia Standard Time (ARBT). Both time zones are shown live below; current offset between them is 9 hours ahead.

Denver · Mountain Standard Time
14:06:32
Wednesday, May 13, 2026
MDT · UTC-06:00
Riyadh · Arabia Standard Time
23:06:32
Wednesday, May 13, 2026
GMT+3 · UTC+03:00

Convert a specific time

From: MST (Denver)
To: ARBT (Riyadh)
--:--

Daylight Saving status right now

MST (Mountain Standard Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-11-01
Offset shift
UTC-06:00 → UTC-07:00
ARBT (Arabia Standard Time)
Observes DST
No

Heads up: MST observes DST while ARBT does not. The 9-hour difference shown above will shift by one hour when MST starts or ends DST.

When can MST and ARBT meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
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17
18
19
20
21
22
23
MST
ARBT
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Denver (MST). Each row shows the local working-hours state in that zone for the same moment in time.
No overlap during strict 9-5 working hours; some flexibility needed.
If both sides are willing to extend to 8am-7pm, the available window is 08:00–09:00 MST (17:00–18:00 ARBT).

Hour-by-hour MST to ARBT conversion table

MST time (Denver)ARBT time (Riyadh)Status
00:00 Wed09:00 WedARBT working
01:00 Wed10:00 WedARBT working
02:00 Wed11:00 WedARBT working
03:00 Wed12:00 WedARBT working
04:00 Wed13:00 WedARBT working
05:00 Wed14:00 WedARBT working
06:00 Wed15:00 WedARBT working
07:00 Wed16:00 WedARBT working
08:00 Wed17:00 WedOff-hours both sides
09:00 Wed18:00 WedMST working
10:00 Wed19:00 WedMST working
11:00 Wed20:00 WedMST working
12:00 Wed21:00 WedMST working
13:00 Wed22:00 WedMST working
14:00 Wed23:00 WedMST working
15:00 Wed00:00 ThuMST working
16:00 Wed01:00 ThuMST working
17:00 Wed02:00 ThuOff-hours both sides
18:00 Wed03:00 ThuOff-hours both sides
19:00 Wed04:00 ThuOff-hours both sides
20:00 Wed05:00 ThuOff-hours both sides
21:00 Wed06:00 ThuOff-hours both sides
22:00 Wed07:00 ThuOff-hours both sides
23:00 Wed08:00 ThuOff-hours both sides

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Mountain Standard Time (MST)
IANA identifier
America/Denver
Current UTC offset
UTC-06:00
Current abbreviation
MDT
Major cities in this zone
DenverPhoenixSalt Lake CityAlbuquerque
Arabia Standard Time (ARBT)
IANA identifier
Asia/Riyadh
Current UTC offset
UTC+03:00
Current abbreviation
GMT+3
Major cities in this zone
RiyadhJeddah

Sun today in Denver and Riyadh

Denver
Sunrise
05:48
Sunset
20:06
Solar noon
12:57
Daylight
14h 18m
Riyadh
Sunrise
05:12
Sunset
18:29
Solar noon
11:50
Daylight
13h 17m

Related converters

ARBT to MST (reverse)MST to ESTMST to PSTMST to GMTMST to UTCMST to CETEST to ARBTPST to ARBTGMT to ARBTUTC to ARBTCET to ARBT
Looking for local time? See time in Denver or time in Riyadh.

Frequently asked questions

What is the time difference between MST and ARBT right now?+
ARBT (Arabia Standard Time) is currently 9 hours ahead MST (Mountain Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does MST or ARBT observe daylight saving time?+
MST: observes daylight saving time. ARBT: does not observe daylight saving time.
When is the best time to schedule a meeting between MST and ARBT?+
Standard 9-5 hours do not overlap. Extending to 8am-7pm gives a window of 08:00–09:00 MST (17:00–18:00 ARBT).
What time is it in Riyadh when it is 12:00 noon in Denver?+
When it is 12:00 Wed in Denver (MST), it is 21:00 Wed in Riyadh (ARBT).
Which IANA time zone identifiers are used for MST and ARBT?+
MST maps to "America/Denver" in the IANA database. ARBT maps to "Asia/Riyadh". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Denver ahead of or behind Riyadh?+
Whether Denver (MST) is ahead of or behind Riyadh (ARBT) depends on the current UTC offsets. Right now ARBT is 9 hours ahead MST. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for MST and ARBT?+
MST is UTC-06:00 (MDT) and ARBT is UTC+03:00 (GMT+3). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both MST and ARBT?+
Not during a strict 9am-5pm window. If both sides flex to 8am-7pm, the available meeting window between MST and ARBT is 08:00–09:00 MST.