tc39/proposal-temporal
Provides standard objects and functions for working with dates and times. observed · 2026-08-28
Health v2 · maintenance only
65/100
- Activity 94
- Release rhythm 8
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3462
- days_rel: n/a
- days_push: 37
- n_releases_24m: 0
Adoption not part of the score
3709 stars · 177 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
The TC39 Temporal proposal, a Stage 4 ECMAScript standard adding a modern date and time API to JavaScript as a global namespace object with immutable types for dates, times, durations, and timezone-aware values. The repository hosts the specification text, documentation, cookbook, and a polyfill, and will be archived once merged into ECMA-262/ECMA-402.
Use cases
- work with dates and times in javascript without the legacy Date pitfalls
- do timezone-aware and DST-safe date arithmetic
- parse and format ISO 8601 / RFC 3339 date-time strings
- support non-Gregorian calendars like Hijri or Nepali
- convert timestamps between time zones
- schedule meetings across time zones
- represent date-only or time-only values without implicit timezone assumptions
- replace moment.js or date-fns with a built-in API
When to choose
- you need a standards-track, immutable date/time API in JavaScript with first-class time zone and calendar support
- you are targeting environments where Temporal is shipped (Firefox 139+, Chrome 144+, Node 26+) or can use the polyfill
- you want DST-safe arithmetic and strict string parsing instead of legacy Date quirks
When to avoid
- you only target runtimes without Temporal support and cannot ship a polyfill
- you need leap-second precision, which Temporal intentionally ignores
- you need a mature third-party library ecosystem with plugins beyond what the standard API provides
Facets
library · maturity stable
date-time programming-languages developer-tools browser cross-platform ecmascript tc39 javascript temporal timezones calendars dst polyfill language-proposal stage-4 localization nodejs
10 sources
- readme: https://github.com/tc39/proposal-temporal · fetched 2026-08-28 · 1352e39df566
- homepage: https://tc39.es/proposal-temporal/docs/ · fetched 2026-08-29 · ed3e02c69349
- site_page: https://tc39.es/proposal-temporal/docs/cookbook.html · fetched 2026-08-29 · 86da5eedbdf9
- site_page: https://tc39.es/proposal-temporal/docs/timezone.html · fetched 2026-08-29 · aa5cdf0f5bd5
- site_page: https://tc39.es/proposal-temporal/docs/now.html · fetched 2026-08-29 · 57abb6ce5426
- site_page: https://tc39.es/proposal-temporal/docs/instant.html · fetched 2026-08-29 · 0ca74b2a6c95
- site_page: https://tc39.es/proposal-temporal/docs/zoneddatetime.html · fetched 2026-08-29 · ae18a6750d5a
- site_page: https://tc39.es/proposal-temporal/docs/plaindate.html · fetched 2026-08-29 · 758daab378a7
- site_page: https://tc39.es/proposal-temporal/docs/plaintime.html · fetched 2026-08-29 · 07bb61a507f5
- site_page: https://tc39.es/proposal-temporal/docs/plaindatetime.html · fetched 2026-08-29 · 26b785e1862a
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| tc39/proposal-temporal | main | 65 |
For agents
markdown · JSON · MCP: product_card(name="tc39/proposal-temporal")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem