Fix

README.md

@@ -409,7 +409,7 @@ columns:
       is_time: true                     # Check if the cell value is a valid time in the format "HH:MM:SS AM/PM" / "HH:MM:SS" / "HH:MM". Case-insensitive.
       is_leap_year: true                # Check if the cell value is a leap year. Example: "2008", "2008-02-29 23:59:59 UTC".
 
-      # Date Intervals. Under the hood, the strings are converted to microseconds and compared.
+      # Date Intervals. Under the hood, the strings are converted to seconds and compared.
       # See: https://www.php.net/manual/en/class.dateinterval.php
       # See: https://www.php.net/manual/en/dateinterval.createfromdatestring.php
       date_interval_min: PT0S           # 0 seconds

tests/Rules/Cell/ComboDateIntervalTest.php

@@ -41,12 +41,6 @@ public function testEqual(): void
             isSame('', $rule->test($examples[0]), $examples[0]);
         }
 
-        isSame(
-            'The date interval of the value "2000-10-02 00:00:01" is parsed as "0" seconds, ' .
-            'which is not equal than the expected "31557600 (P1Y) seconds"',
-            $rule->test('2000-10-02 00:00:01'),
-        );
-
         isSame(
             'The date interval of the value "<c>qwerty</c>" is ' .
             '<red>Can\'t parse date interval: qwerty</red>, ' .