The WaitUntilDate function waits (blocks) until the given date is reached. The function returns false if no arguments are passed. The format of the time string is 'yyyy-mm-dd' where 'yyyy' is the year, 'mm' the month, and 'dd' the day of the month.

bool: WaitUntilDate(string dateString='yyyy-mm-dd')

var result = WaitUntilDate();
// result: false

var result = WaitUntilDate('2016-12-21');
// waits until 21st December 2016