TC39’s March 2026 meeting advanced eight ECMAScript proposals, including Temporal reaching Stage 4 and securing its place in the ECMAScript 2026 speci...

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TC39's March 2026 meeting officially advanced the Temporal API to Stage 4, making it part of the ECMAScript 2026 specification. Temporal replaces JavaScript's long-criticized Date object with immutable date/time types, built-in time zone and calendar support, and predictable arithmetic. The proposal took nearly a decade to complete, with contributions from Bloomberg, Igalia, Google, and Microsoft. Browser support has landed in Firefox and Chromium-based browsers, with partial Safari support, and TypeScript 6.0 includes type definitions. Other proposals advanced include Intl era and monthCode (Stage 4), Import text (Stage 3), Error stack accessor and Iterator includes (Stage 2.7), Intl unit protocol and Thenable curtailment (Stage 2), and Error code property (Stage 1).

TC39 Advances Temporal to Stage 4 Alongside Several ECMAScri...

Other Proposals TC39 Advanced at the March 2026 Meeting #

Temporal reaching Stage 4 is a big step. Native timezone handling and predictable date math will finally fix a lot of issues developers have struggled with using Date for years.

This indeed is a much-needed improvement over the current and archaiac <code>Date</code> API. I hope they push this proposal to final phase where other browsers can adopt it and roll it out.
Current support seems quite poor - <a href="https://caniuse.com/?search=Temporal" target="_blank" rel="noopener nofollow">https://caniuse.com/?search=Temporal</a>

Yah temporal is finally going to land!! 🎉