How to Use the ES2026 Temporal API in Node.js REST APIs (2026 Guide)
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After 9 years in development and countless TC39 meetings, the JavaScript Temporal API officially reached Stage 4 on March 11, 2026, locking it into the ES2026 specification. That means it's no longer a proposal — it's the future of date and time handling in JavaScript, and you should start using it in your Node.js APIs today. If you've ever shipped a date-related bug in production — DST edge cases, wrong timezone conversions, silent mutation bugs from Date.setDate() — you're not alone. The Date