# set-time command

The set-time command sets the current
system time. The hours are specified from 00 (12:00 AM) to 23 (11:00
PM). The current time can be displayed by pressing CTRL+M or Enter
at the TCL prompt, or by entering the TCL command time. If the time is actually changed, set-time logs
an entry in the errors file.

**Synonyms:** set.time

**For Windows:**Not Supported. Use Windows utility
or the BIOS to set the time.

## Syntax

```
set-time hh:mm{:ss} {(u)}
```

## Parameter(s)

| u | Updates the hardware real-time clock, as well as the system (software clock). |
| --- | --- |

## Description

Note: On D3 UNIX systems, this
does not change the UNIX time. It only creates a difference. The new
time is preserved (even if the system is rebooted) until another set-time command is issued. If the UNIX date is changed,
the D3 date is changed, too. The D3 implementation does not use the
daylight savings UNIX algorithm. Therefore, the time has to be adjusted
manually when daylight savings goes into effect.

## See also

- [admin utility](https://d3codex.com/tcl/admin-utility/)
- [date command](https://d3codex.com/tcl/date-command/)
- [set-date command](https://d3codex.com/tcl/set-date-command/)
- [set-time command](https://d3codex.com/tcl/set-time-command/)
- [start.rtc command](https://d3codex.com/tcl/start-rtc-command/)
- [System privileges](https://d3codex.com/definitions/system-privileges/)
- [time command](https://d3codex.com/tcl/time-command/)
- [timedate command](https://d3codex.com/tcl/timedate-command/)

---
Source: https://d3codex.com/tcl/set-time-command/ - part of the D3Codex reference.