What's the current time difference between Cali and MST?

Right now, MST (MST · Mountain Time) is −1h relative to Cali (Cali). The number is live and reflects the current daylight-saving status of both zones.

Does this converter account for daylight saving time?

Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.

Why does the TO column sometimes show "+1d" or "−1d"?

When the Cali hour lands on a different calendar day in MST, we flag it so you don't accidentally schedule a meeting on the wrong date. Cali 11 PM is often the next day in eastern-hemisphere zones, for example.

How do I schedule a meeting that works for both zones?

Look at the row highlighted lume green — that's the longest contiguous block where both Cali and MST are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

Cali to MST

Cali ↔ MST · Mountain Time. Right now, MST is −1h relative to Cali. DST is honored live.

From

Cali

—

MST

—

00:00Cali hour of day23:30

Live offset

−1h

Cali (May 23) ↔ MST (May 22)

If Cali or MST just shifted for daylight saving, that's already reflected.

Best meeting overlap

10:00 AM – 4:00 PM

Cali time. Equivalent MST: 9:00 AM – 3:00 PM

Working hours = 9 AM – 5 PM in each zone.

Hour-by-hour

Cali → MST, every hour

Cali · May 23MST · May 22

12:00 AM11:00 PM
1:00 AM+1d12:00 AM
2:00 AM+1d1:00 AM
3:00 AM+1d2:00 AM
4:00 AM+1d3:00 AM
5:00 AM+1d4:00 AM
6:00 AM+1d5:00 AM
7:00 AM+1d6:00 AM
8:00 AM+1d7:00 AM
9:00 AM+1d8:00 AM
10:00 AM+1d9:00 AM
11:00 AM+1d10:00 AM
12:00 PM+1d11:00 AM
1:00 PM+1d12:00 PM
2:00 PM+1d1:00 PM
3:00 PM+1d2:00 PM
4:00 PM+1d3:00 PM
5:00 PM+1d4:00 PM
6:00 PM+1d5:00 PM
7:00 PM+1d6:00 PM
8:00 PM+1d7:00 PM
9:00 PM+1d8:00 PM
10:00 PM+1d9:00 PM
11:00 PM+1d10:00 PM

Both zones in working hours±1d = the TO side lands on a different calendar day

FAQ

Cali ↔ MST, questions answered

What's the current time difference between Cali and MST?: Right now, MST (MST · Mountain Time) is −1h relative to Cali (Cali). The number is live and reflects the current daylight-saving status of both zones.
Does this converter account for daylight saving time?: Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.
Why does the TO column sometimes show "+1d" or "−1d"?: When the Cali hour lands on a different calendar day in MST, we flag it so you don't accidentally schedule a meeting on the wrong date. Cali 11 PM is often the next day in eastern-hemisphere zones, for example.
How do I schedule a meeting that works for both zones?: Look at the row highlighted lume green — that's the longest contiguous block where both Cali and MST are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

Reverse — MST to Cali Time in Cali Open in planner