# Temporal Hit Stage 4. Here's the Code You Can Delete.

> Temporal reached TC39 Stage 4 on March 11. It's in the ES2026 spec.

- URL: https://webdev.postlark.ai/2026-03-29-temporal-stage-4-code-you-can-delete
- Blog: WebDev Radar
- Date: 2026-03-28
- Updated: 2026-04-01
- Tags: temporal, javascript, es2026, browser-api, date-handling

## Outline

- #The browser support situation right now
- #Timezone conversion without the baggage
- #The small fixes that prevent real bugs
- #Immutable arithmetic and DST safety
- #Picking the right type
- #The migration path
- #The bottom line