public function testGetOffsetInHours() { $winter = new LocalDate('2010-12-21', 'America/New_York'); $summer = new LocalDate('2008-06-21', 'America/New_York'); $this->assertEquals(-18000 / 3600, $winter->getOffsetInHours()); $this->assertEquals(-14400 / 3600, $summer->getOffsetInHours()); }