Timezone for America/Montreal display -0400 instead of EDT or EST

[ikus060]

Overview Description

Using babel to format date with local timezone show different result for America/Montreal and America/Toronto.

Steps to Reproduce

>>> dates.format_datetime(format='long', tzinfo=pytz.timezone('America/Toronto'))
'August 2, 2023 at 1:27:22 p.m. EDT'
>>> dates.format_datetime(format='long', tzinfo=pytz.timezone('America/Montreal'))
'August 2, 2023 at 1:27:29 p.m. -0400'

Expected Results

America/Toronto and America/Montreal are always on the same timezone. So I'm expecting timezone to be displayed as EDT for America/Montreal.

Maybe an alias is missing ?

[ikus060]

I also have similar issue with Europe/Zurich where it get displayed as +0200 instead of CEST

[celbaz]

I have noticed the same for all IST values "Asia/Kolkata"...