Countdown for registration opening

[matthijskooijman]

To prevent confusion about when registration opens (especially wrt to timezones), it would be good if Arta would show how long until registration opens. I think minute-precision is fine (no need for an actual countdown), which should remove any ambiguity. The countdown should probably not replace the full timestamp, just add to it.

I think there should be scripts that can handle this completely automatically, by just passing a timestamp and letting them render it.

One related improvement could be to display times in the user's (or at least user's system's) timezone. It seems there are APIs to query that: https://stackoverflow.com/questions/6939685/get-client-time-zone-from-browser

[ReneB]

moment.js is a fine library to do "relative time", as they call it. The code for that would be something like moment(new Date("2020-06-15T20:00:00.000+02:00")).fromNow();