const constant day duration javascript node node-js nodejs sec seconds secs stdlib time

const constant duration javascript min minute node node-js nodejs sec seconds secs stdlib time

calendar date gregorian javascript node node-js nodejs sec seconds secs stdlib time util utilities utility utils year yr

const constant duration javascript node node-js nodejs sec seconds secs stdlib time week wk

const constant duration hour hr javascript node node-js nodejs sec seconds secs stdlib time

calendar date gregorian javascript mon month node node-js nodejs sec seconds secs stdlib time util utilities utility utils