Run results for: moment.js vs day.js vs date-fns set

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36 Edg/135.0.0.0

Browser: Chrome 135

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

date-fns

1.9M/s

momentjs

896K/s

dayjs

406K/s

View exact numbers

Test name	Executions per second
✓ date-fns	1,920,745 Ops/sec
momentjs	895,704 Ops/sec
dayjs	405,637 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/dayjs/dayjs.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/dayjs/plugin/utc.js"></script>
<script src="https://cdn.jsdelivr.net/npm/dayjs/plugin/timezone.js"></script>
<script src="https://cdn.jsdelivr.net/npm/moment/moment.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/moment-timezone@0.5.48/builds/moment-timezone-with-data.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/date-fns/cdn.min.js"></script>

Script Preparation code:

var unix = 1724409214;

Tests:

momentjs
return moment(unix).set("hours", 0).set("minutes", 0).set("seconds", 0).set("milliseconds", 0);
dayjs
// dayjs.extend(window.dayjs_plugin_utc) // dayjs.extend(window.dayjs_plugin_timezone) return dayjs(unix).set("hours", 0).set("minutes", 0).set("seconds", 0).set("milliseconds", 0);
date-fns
return dateFns.set(new Date(unix), { hours: 0, minutes: 0, seconds: 0, milliseconds: 0 })