Get the current timestamp in seconds

Convert a date-time to whole Unix seconds.

JavaScript Version 1.0.0 · MIT · .md

function unixSeconds(now) { return Math.floor(Date.parse(now) / 1000); }

Try in the local lab Download function

Input & expected output

Input

"2026-10-28T14:00:00Z"

Expected output

1793196000

The edge case

Input

"1970-01-01T00:00:00.999Z"

Expected output

Know the limits

now is an input so the result is testable; pass new Date().toISOString(), or use Math.floor(Date.now() / 1000).
Oveyon’s x-oveyon-timestamp webhook header is in these units: compare it with the current value to reject stale deliveries, as the signature lab shows.

The function above is the implementation used by the lab. The lab validates JSON types and caps size before execution; include equivalent validation when accepting untrusted input in your application.

Source & maintenance

Takes the current time as an input so the result is reproducible. Original MDX retained as inert source evidence.

Maintained by Oveyon. Source commit: 14b481cf60df. Read the license.

Local fixture scope · Node.js 22.23.2 · reviewed October 28, 2026. No external service is required.

Keep exploring

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Add AM PM suffix to an hour — Turn an hour from 0 to 23 into a 12-hour label with am or pm.
Calculate the number of days between two dates — Count whole calendar days between two YYYY-MM-DD dates.