Description:
------------
For some reason when we compare 2 dates with 1 sec difference we got a bug in some PHP versions like: `5.6.30`, `7.0.0`, `7.1.16`. In some old verions it not persist in some new again is found.
The link with full test: https://3v4l.org/25phg

Test script:
---------------
<?php

function getTimezoneDate(DateTime $dateTime)
{
    return $dateTime->setTimezone(
        DateTime::createFromFormat('O', "+05:00")->getTimezone()
    );
}

$startDate = new DateTime('@' . 1451674800);

$startDate = getTimezoneDate($startDate);
$endDate = getTimezoneDate(new DateTime('@' . 1451847599));

$startDate->modify('+2 day');

$result1 = $startDate < $endDate;
$result2 = $startDate->getTimestamp() < $endDate->getTimestamp();

echo var_export($result1, true) . "\n" . var_export($result2, true);

Expected result:
----------------
```
false
false
```

Actual result:
--------------
```
true
false
```