# 22 Time period specification

#### The format

Time period has the following format:

    d-d,hh:mm-hh:mm

You can specify more than one time period using a semicolon (;)
separator:

    d-d,hh:mm-hh:mm;d-d,hh:mm-hh:mm...

#### Description

|Format|Description|
|------|-----------|
|**d**|Day of week: 1 - Monday, 2 - Tuesday ,... , 7 - Sunday|
|**hh**|Hours: 00-24|
|**mm**|Minutes: 00-59|

::: noteimportant
The upper bound of time period specification is
not included. E. g. if you specify 09:00-18:00 the last second included
in the time period will be 17:59:59. This is true starting from version
1.8.7 for everything except [Working
time](/manual/web_interface/administration#general) which has always
worked this way.
:::

#### Default

Empty time specification equals to 01-07,00:00-24:00

#### Examples

Working hours. Monday - Friday from 9:00 till 18:00:

    1-5,09:00-18:00

Working hours plus weekend. Monday - Friday from 9:00 till 18:00 and
Saturday, Sunday from 10:00 till 16:00:

    1-5,09:00-18:00;6-7,10:00-16:00