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Run results for:
DateTime Timezone Test
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<iframe src="https://measurethat.net/Embed?id=612577" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36
Browser:
Chrome 137
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
10 months ago
Test name
Executions per second
Luxon
31006.2 Ops/sec
dayJs
2455.2 Ops/sec
Moment
25694.1 Ops/sec
Temporal timeozne
8658.8 Ops/sec
HTML Preparation code:
<!-- Luxon v3.4.4 (Latest major version, maintained) --> <script src="https://cdn.jsdelivr.net/npm/luxon@3.4.4/build/global/luxon.min.js"></script> <!-- date-fns v3.6.0 (modular library, not typically used via single CDN) --> <!-- CDN version includes all functions --> <script src="https://cdn.jsdelivr.net/npm/date-fns@3.6.0/dist/date-fns.min.js"></script> <!-- Moment.js v2.29.4 (Latest, still in maintenance mode) --> <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.4/moment.min.js"></script> <!-- Correct: Moment.js with Timezone support --> <script src="https://cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.5.43/moment-timezone-with-data.min.js"></script> <!-- Day.js v1.11.10 (Latest) --> <script src="https://cdnjs.cloudflare.com/ajax/libs/dayjs/1.11.10/dayjs.min.js"></script> <!-- Day.js UTC plugin (required for timezone support) --> <script src="https://cdnjs.cloudflare.com/ajax/libs/dayjs/1.11.10/plugin/utc.min.js"></script> <!-- Day.js Timezone plugin --> <script src="https://cdnjs.cloudflare.com/ajax/libs/dayjs/1.11.10/plugin/timezone.min.js"></script> <script src='https://cdn.jsdelivr.net/npm/temporal-polyfill@0.3.0/global.min.js'></script>
Script Preparation code:
const isoString = "2023-01-01T12:34:56.789Z"; dayjs.extend(dayjs_plugin_utc); dayjs.extend(dayjs_plugin_timezone);
Tests:
Luxon
luxon.DateTime.fromISO(isoString).setZone('Europe/Berlin').startOf('day').toISO();
dayJs
dayjs(isoString).tz('Europe/Berlin').startOf('day').format();
Moment
moment.tz(isoString, 'Europe/Berlin').startOf('day').format();
Temporal timeozne
Temporal.Instant.from(isoString) .toZonedDateTimeISO('Europe/Berlin') .with({ hour: 0, minute: 0, second: 0, millisecond: 0 }).toString();