Open the calendar-aware date-picker dialog for a stored worldTime value.
Displays month/day/year and hour/minute/second inputs plus a day-skip stepper
(which rolls months/years over correctly via skipDays), previews the
resulting date live with the calendar's formatter, and shows a red
"Invalid Date Format" when the parts don't resolve to a real date. Now
chooses the current world time; Clear chooses the empty value.
Parameters
current: undefined|null|number
The field's current worldTime (seconds since epoch), or
null/undefined when unset (the dialog then opens on the current world time).
Returns Promise<number|null|undefined>
The chosen worldTime number, null to clear the field, or undefined
if the dialog was cancelled/dismissed.
Open the calendar-aware date-picker dialog for a stored worldTime value.
Displays month/day/year and hour/minute/second inputs plus a day-skip stepper (which rolls months/years over correctly via skipDays), previews the resulting date live with the calendar's formatter, and shows a red "Invalid Date Format" when the parts don't resolve to a real date. Now chooses the current world time; Clear chooses the empty value.