Keypup

Function: <code>BUSINESS_DAYS</code>

Syntax: <code>BUSINESS_DAYS(datetime_start, datetime_end, [timezone="UTC"], [hour_start="09:00"], [hour_end="17:00"], [weekday_start=1], [weekday_end=5])</code>

Description: Return a decimal number representing the business days elapsed between two datetime values.

Partial business days are calculated relative to the working hours (from <code>09:00</code> to <code>17:00</code> by default), not based on the 24-hour clock day.

For instance, the business day duration between <code>10:00</code> and <code>14:00</code> will be <code>0.5</code>, since it is a duration of 4 hours out of an 8-hour day (from <code>09:00</code> to <code>17:00</code>). If you change the working hours to be from <code>06:00</code> till <code>22:00</code> (16-hour day), then this business day duration becomes <code>0.25</code>.

The range of days worked within the week is specified using the <code>ISO8601</code> standard, where Monday is <code>1</code> And Sunday is <code>7</code>.

The list of supported time zones is specified below.

<code>BUSINESS_DAYS("2013-06-24T13:30:00", "2013-06-25T18:29:00")</code> returns <code>1.4375</code>

<code>BUSINESS_DAYS("2013-06-24T13:30:00", "2013-06-25T18:29:00", "CET")</code> returns <code>1.3125</code>. With CET, the clock is moved one hour forward compared to UTC, so fewer work hours are accounted for on the first day.

<code>BUSINESS_DAYS("2013-06-24T11:00:00", "2013-06-24T15:00:00")</code> returns <code>0.5</code> (same day, half-shift)

<code>BUSINESS_DAYS("2013-06-24T13:35:00", "2013-06-25T18:29:00", "CET", "10:00", "16:00", 2, 4)</code> returns <code>1.0</code>. The first day is ignored since it's a Monday and we've explicitly specified that the week goes from Tuesday (<code>2</code>) to Thursday (<code>4</code>). The second day goes from <code>10:00</code> till <code>18:29</code>, which is equivalent to <code>10:00</code> till <code>16:00</code> since the hours beyond the shift are ignored. This is equivalent to a full day of work, thus the `1.0` value.

<code>BUSINESS_DAYS("2013-06-24T13:35:00", "2013-07-25T18:29:00", "CET", "10:00", "14:00")</code> returns <code>23.0</code>. The first day is ignored because in <code>CET</code>, the "from" datetime starts after the shift's end (<code>14:00</code>). The last day is accounted in full since it ends after the shift's end. Then all weekdays between the two datetimes get accounted for.

- <code>BUSINESS_DAYS("2013-06-24T13:30:00", "2013-06-25T18:29:00")</code> returns <code>1.4375</code>
- <code>BUSINESS_DAYS("2013-06-24T13:30:00", "2013-06-25T18:29:00", "CET")</code> returns <code>1.3125</code>. With CET, the clock is moved one hour forward compared to UTC, so fewer work hours are accounted for on the first day.
- <code>BUSINESS_DAYS("2013-06-24T11:00:00", "2013-06-24T15:00:00")</code> returns <code>0.5</code> (same day, half-shift)
- <code>BUSINESS_DAYS("2013-06-24T13:35:00", "2013-06-25T18:29:00", "CET", "10:00", "16:00", 2, 4)</code> returns <code>1.0</code>. The first day is ignored since it's a Monday and we've explicitly specified that the week goes from Tuesday (<code>2</code>) to Thursday (<code>4</code>). The second day goes from <code>10:00</code> till <code>18:29</code>, which is equivalent to <code>10:00</code> till <code>16:00</code> since the hours beyond the shift are ignored. This is equivalent to a full day of work, thus the `1.0` value.
- <code>BUSINESS_DAYS("2013-06-24T13:35:00", "2013-07-25T18:29:00", "CET", "10:00", "14:00")</code> returns <code>23.0</code>. The first day is ignored because in <code>CET</code>, the "from" datetime starts after the shift's end (<code>14:00</code>). The last day is accounted in full since it ends after the shift's end. Then all weekdays between the two datetimes get accounted for.

Below is the list of timezone abbreviations supported by <code>timezone</code> argument:

For a complete list of all supported "named" timezones (e.g. <code>Europe/Amsterdam</code>), see <a href="https://docs.keypup.io/en/articles/11705324-supported-timezones">the following help article</a>.

BUSINESS_DAYS

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