Feature summary (what you would like to be able to do and where):

In WSContest Tool, please add the timezone (e.g. default is UTC) in the display, to avoid confusion with the local timezone.

For example, in https://wscontest.toolforge.org/c/93 it only says:

Start date and time: 2023-03-06 00:00:00
End date and time: 2023-03-20 00:00:01

it should be changed to:

Start date and time: 2023-03-06 00:00:00 UTC
End date and time: 2023-03-20 00:00:01 UTC

This should be done by using an i18n message, so that the "UTC" part can be localized into different languages. The Start date and time: label is already a message (called start-date-label), so another should be added that is either the entire string (e.g. Start date and time: $1 UTC or just the latter part.

Use case(s) (list the steps that you performed to discover that problem, and describe the actual underlying problem which you want to solve. Do not describe only a solution):

In one of the Wikisource competition that's currently being held, one participant confuses the display time 00.00 as local timezone, because there's no indication in that page that it's UTC timezone.

Benefits (why should this be implemented?):

Avoid confusion, clarify things. Because the world timezones are a mess.