"Is it now Ramadan?" function in PHP

Is it now Ramadan.php

# by @levelsio
#
# MIT licensed
#
# make sure you enable php_intl on PHP
# you can do by uncommenting ;extension=intl or ;extension=php_intl
# and installing php-intl, e.g. sudo apt-get install php-intl
#
# made for Nomad List to give people a notice if they go to a place
# where it is currently Ramadan
#
# enjoy
#



function isItNowRamadan() {
	$formatter = IntlDateFormatter::create(
	    'en_US',
	    IntlDateFormatter::SHORT,
	    IntlDateFormatter::NONE,
	    'US/Eastern',
	    IntlDateFormatter::GREGORIAN
	);

	$cal = IntlCalendar::createInstance('US/Eastern', '@calendar=islamic-civil');
	$cal->set(IntlCalendar::FIELD_MONTH, 8);
	$cal->set(IntlCalendar::FIELD_DAY_OF_MONTH, 1);
	$cal->clear(IntlCalendar::FIELD_HOUR_OF_DAY);
	$cal->clear(IntlCalendar::FIELD_MINUTE);
	$cal->clear(IntlCalendar::FIELD_SECOND);
	$cal->clear(IntlCalendar::FIELD_MILLISECOND);

    	$start=strtotime($formatter->format($cal));

	$cal = IntlCalendar::createInstance('US/Eastern', '@calendar=islamic-civil');
	$cal->set(IntlCalendar::FIELD_MONTH, 9);
	$cal->set(IntlCalendar::FIELD_DAY_OF_MONTH, 1);
	$cal->clear(IntlCalendar::FIELD_HOUR_OF_DAY);
	$cal->clear(IntlCalendar::FIELD_MINUTE);
	$cal->clear(IntlCalendar::FIELD_SECOND);
	$cal->clear(IntlCalendar::FIELD_MILLISECOND);

	$end=strtotime($formatter->format($cal));


	if(time()>$start && time()<$end) {
		return true;
	}
	else {
		return false;
	}
}