Node.js 26 is the Current release and does not become Active LTS until October 2026, so production systems should stay on Node.js 24 until then.
Temporal is enabled without a flag in Node.js 26, which is the first default change to date handling that JavaScript has had in years.
Node.js 24 runs out of security support on April 30, 2028, and Node.js 20 already reached end of life on April 30, 2026.