puppeteer/website/versioned_docs/version-20.3.0/api/puppeteer.securitydetails.validfrom.md

---
sidebar_label: SecurityDetails.validFrom
---

# SecurityDetails.validFrom() method

[Unix timestamp](https://en.wikipedia.org/wiki/Unix_time) marking the start of the certificate's validity.

#### Signature:

```typescript
class SecurityDetails {
  validFrom(): number;
}
```

**Returns:**

number
chore(main): release 16.1.0 (#8743) * chore(main): release 16.1.0 * chore: generate versioned docs Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com> 2022-08-06 14:49:20 +00:00			`---`
			`sidebar_label: SecurityDetails.validFrom`
			`---`

			`# SecurityDetails.validFrom() method`

chore: release main (#9962) Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com> 2023-04-03 08:23:08 +00:00			`[Unix timestamp](https://en.wikipedia.org/wiki/Unix_time) marking the start of the certificate's validity.`

chore: release main (#9156) 2022-10-24 14:31:12 +00:00			`#### Signature:`
chore(main): release 16.1.0 (#8743) * chore(main): release 16.1.0 * chore: generate versioned docs Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com> 2022-08-06 14:49:20 +00:00
			```typescript
			`class SecurityDetails {`
			`validFrom(): number;`
			`}`
			```

			`Returns:`

			`number`