Time constants to deal with nanoseconds.
Exposed constants in nanoseconds: MICROSECOND, MILLISECOND, SECOND, MINUTE, HOUR, DAY, WEEK.
mops add time-consts
import {DAY; HOUR} "mo:time-consts";let time = 2 * DAY + 4 * HOUR; // 2 days and 4 hours in nanoseconds
if (elapsedTime >= time) {
// ...
};