Description:
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---
From manual page: http://www.php.net/datetime.formats.relative
---

While no specific example on this is in the manual, "fourth day July 2016" returns July 5th.

It's not specific to the fourth, any day is returning plus one.


Test script:
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$firstDayJuly2016 =  new DateTime("first day July 2016");

// The following returns
// object(DateTime)
// public 'date' => string '2016-07-02 00:00:00' (length=19)

var_dump($firstDayJuly2016);

$fourthDayJuly2016 =  new DateTime("fourth day July 2016");

// The following returns
// object(DateTime)
// public 'date' => string '2016-07-05 00:00:00' (length=19)

var_dump($fourthDayJuly2016);

die;

Expected result:
----------------
I believe the expectation is that the "fourth day July 2016" would return July 2016-07-04.

Actual result:
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"fourth day July 2016" returns July 2016-07-05.