---
name: "octrtc"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/octrtc"
---

# octrtc(4)

time-of-day clock

## NAME

**octrtc** – time-of-day clock

## SYNOPSIS

**octrtc\* at mainbus?**

## DESCRIPTION

The **octrtc** driver supports the low resolution DS1337 time-of-day clock found on some of the octeon models. The clock has a resolution of 1 second.

The **octrtc** driver is used for getting and setting the system time.

## HARDWARE

Supported models:

- D-Link DSR-500

  - Portwell CAM-0100

  Known models missing a DS1377 clock:

- Ubiquiti Networks EdgeRouter Lite

  ## SEE ALSO

[intro(4)](/intro/4.md), gettime(9), [inittodr(9)](/inittodr/9.md), [resettodr(9)](/resettodr/9.md)

## HISTORY

The **octrtc** driver first appeared in OpenBSD 5.5.

## AUTHORS

The **octrtc** driver was written by Paul Irofti ⟨*paul@irofti.net*⟩.