Add day of week option to clock's time offset

[bluecaret]

Suggestion by Phtvch Kurvora via email:

While I was setting up the weather, it occurred to me that a handy feature would be to be able to add a date in clocks 2-5. I have one set to a time zone on the other side of the planet, and being able to see the date (especially the day of the week) in that timezone would be useful. Right now, I use the time offset label to help me remember if that timezone is ahead or behind.

[bluecaret]

The next version will allow you to set the timezone of the date.