You can use one or more of the commands / parameters below in combination to get specific time zone and current time information about Users, Channel Members or Groups.
For example, "/timeshow 14:30 @joe @tom #marketing", will display local times at 14:30 for Joe, Tom and all users in the Marketing Channel
Show output to others?
Timebot for Private channels
@timebot is an optional helper that provides time zone information of all members in a private channel or group.
Just invite @timebot to the private channel or group by using the command /invite @timebot