How to set the default timezone for messages being sent?

[Bahodir Mansurov]

Hello,

Is there a way to set the timezone of newly composed messages from
within Emacs (without changing the system timezone)? Specifically, I'm
interested in changing the timezone of the "Date" header of the messages
being sent.

Thanks,
B

[Eric Abrahamsen]

Post by Bahodir Mansurov
Hello,
Is there a way to set the timezone of newly composed messages from
within Emacs (without changing the system timezone)? Specifically, I'm
interested in changing the timezone of the "Date" header of the messages
being sent.

I think probably not. The date headers are made using
`message-make-date', which provides no way of getting at the optional
third argument to `format-time-string'.

Eric

[Bob Newell]

I think probably not. The date headers are made using
`message-make-date', which provides no way of getting at the optional
third argument to `format-time-string'.

If you just wanted to set a fixed time zone, it would be easy enough to
advise or replace message-make-date to make the time zone whatever you
wish. A conditional time zone would be more tricky but still could be done.

[Göktuğ Kayaalp]

Post by Bahodir Mansurov
Hello,
Is there a way to set the timezone of newly composed messages from
within Emacs (without changing the system timezone)? Specifically, I'm
interested in changing the timezone of the "Date" header of the messages
being sent.

You can change the TZ variable in Emacs like:

(setenv "TZ" "Europe/London")

it works for me. I guess you can make a function like this (example in
pseudo-code):

(setf default-timezone (getenv "TZ"))

(defun send-message-with-timezone (tz)
(interactive (list (read-string "Timezone: ")))
(setenv "TZ" tz)
(message-send)
(setenv "TZ" default-timezone))

and bind it to C-c C-c in message-mode.

Post by Bahodir Mansurov
Thanks,
B

[Emanuel Berg]

Post by Göktuğ Kayaalp
(setenv "TZ" "Europe/London")
it works for me. I guess you can make
a function like this (example in pseudo-code)

Better to do this in the shell's environment
file, e.g. ~/.zshenv for zsh:

export TZ='Europe/Stockholm'

You can pass this to a tool without setting it
system-wide like this, for example if your wife
has run off with you lawer and now lives in LA:

la-time () {
TZ="America/Los_Angeles" date
}

[Göktuğ Kayaalp]

Post by Emanuel Berg

Post by Göktuğ Kayaalp
(setenv "TZ" "Europe/London")
it works for me. I guess you can make
a function like this (example in pseudo-code)

Better to do this in the shell's environment

Certainly, but AFAIU the OP wants to modify the timezone temporarily to
have a ‘Date:’ header in a certain timezone, different from his default
one, when sending some particular messages.

Post by Emanuel Berg
export TZ='Europe/Stockholm'
You can pass this to a tool without setting it
system-wide like this, for example if your wife
la-time () {
TZ="America/Los_Angeles" date
}