Math
import {
diffInMillisec,
latestDateTime,
oldestDateTime,
} from "https://deno.land/x/ptera/mod.ts";
const dt1 = datetime("2021-08-21:13:30:00");
const dt2 = datetime("2021-01-30:21:30:00");
diffInMillisec(dt1, dt2); // 17510400000
const latest = datetime("2021-08-21");
const oldest = datetime("2021-01-30");
const middle = datetime("2021-04-30");
const datetimes = [latest, oldest, middle];
latestDateTime(datetimes); // latest
oldestDateTime(datetimes); // oldest
const dt = datetime("2021-08-21:13:30:00");
// { year: 2021, month: 8, day: 21, hour: 13, minute: 30, second: 0, millisecond: 0, }
dt.add({ year: 1 }).substract({ month: 2 });
// { year: 2022, month: 6, day: 21, hour: 13, minute: 30, second: 0, millisecond: 0, }