Skip to main content

API reference Examples Services

⌘K

↑↓Up or down tonavigate↵Enter toselectESCEscape toclose⌘⇧KToggle AIAI

Deno APIs
Web APIs
Node APIs

Node

tls

PeerCertificate

.

valid_from

property PeerCertificate.valid_from

The date-time the certificate is valid from.

Type #

string

Type

Deno Docs

Deno Runtime
Examples
Standard Library
Deno API Reference

Services Docs

Deno Deploy ^EA
Deno Deploy Classic
Deno Subhosting

Community

Discord
GitHub
YouTube
Bluesky
Mastodon
Twitter
Newsletter

Help & Feedback

Community Support
Deploy System Status
Deploy Feedback
Report a Problem

Company

Deno Website
Blog
Careers
Merch
Privacy Policy

Copyright © 2025 the Deno authors.