Montreal to Altadena time converter

Altadena is 3 hours behind Montreal. When it is 9:00 AM in Montreal, it is 6:00 AM in Altadena.

Montreal EDT

Tuesday, October 20, 2026

Altadena PDT

Tuesday, October 20, 2026

Montreal
Quebec, Canada
Tue, Oct 20
EDTUTC-4
Altadena
California, United States
Tue, Oct 20
PDTUTC-7-3h
Finding your time zone…
Shared working hours (9:00–18:00)

Montreal to Altadena conversion table

Every hour of today in Montreal and the matching time in Altadena. Light rows are typical working hours (9:00–18:00).

MontrealAltadena
12:00 AM9:00 PM−1 day
1:00 AM10:00 PM−1 day
2:00 AM11:00 PM−1 day
3:00 AM12:00 AM
4:00 AM1:00 AM
5:00 AM2:00 AM
6:00 AM3:00 AM
7:00 AM4:00 AM
8:00 AM5:00 AM
9:00 AM6:00 AM
10:00 AM7:00 AM
11:00 AM8:00 AM
12:00 PM9:00 AM
1:00 PM10:00 AM
2:00 PM11:00 AM
3:00 PM12:00 PM
4:00 PM1:00 PM
5:00 PM2:00 PM
6:00 PM3:00 PM
7:00 PM4:00 PM
8:00 PM5:00 PM
9:00 PM6:00 PM
10:00 PM7:00 PM
11:00 PM8:00 PM

Best time to call or meet

Both sides are at work from 12:00 PM – 6:00 PM in Montreal (9:00 AM – 3:00 PM in Altadena).

Daylight saving time and the difference

The difference changes during the year because Montreal and Altadena switch clocks on different dates:

  • Oct 20, 2026 – Nov 1, 2026: -3h
  • Nov 1, 2026 – Nov 1, 2026: -2h
  • Nov 1, 2026 – Mar 14, 2027: -3h
  • Mar 14, 2027 – Mar 14, 2027: -4h
  • Mar 14, 2027 – Oct 20, 2027: -3h

Distance

Montreal and Altadena are 3,949 km (2,454 miles) apart in a straight line.

More conversions

Altadena to MontrealMontreal to New YorkMontreal to LondonMontreal to Los AngelesMontreal to ChicagoMontreal to TorontoMontreal to São PauloMontreal to ParisMontreal to BerlinMontreal to MoscowMontreal to DubaiMontreal to New DelhiMontreal to Bangkok
New York to AltadenaLondon to AltadenaLos Angeles to AltadenaChicago to AltadenaToronto to AltadenaSão Paulo to AltadenaParis to AltadenaBerlin to AltadenaMoscow to AltadenaDubai to AltadenaNew Delhi to AltadenaBangkok to Altadena

Questions and answers

What is the time difference between Montreal and Altadena?

Altadena is 3 hours behind Montreal.

What time is it in Altadena when it is 9 AM in Montreal?

When it is 9:00 AM in Montreal, it is 6:00 AM in Altadena.

When is the best time to call Altadena from Montreal?

Both sides are at work from 12:00 PM – 6:00 PM in Montreal (9:00 AM – 3:00 PM in Altadena).

Does the time difference between Montreal and Altadena change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.