Command emacspeak-speak-time bound to C-e
t speaks the current time.
An additional convenience offered by this keystroke is to get the
time at a specified time zone using Emacs' completion
facility.
To use this feature, simply precede the keystroke with an
interactive prefix arg i.e., use C-u C-e
t.
This will prompt for the timezone in the minibuffer. Using two
C-u C-u will set the default timezone after
speaking the time --- a useful way of avoiding jet-lag as you travel.