A simple countdown timer than can easily be customised. The timer can be set to countdown to a time in a specific timezone. i.e. 15:00 British Summer Time - and the countdown will take into account the users current time (timezone) to give the correct countdown time. Example timezone set to “Europe/London” using moment.js. You will need to adjust this to the timezone that you want to use.

countdown, timer, clock, utc, gmt, time, timezone, edt, bst, cet