curl -s 'http://www.mozilla.org/projects/calendar/caldata/JapanHolidays.ics' | grep RRULE $ curl -s 'http://www.mozilla.org/projects/calendar/caldata/JapanHolidays.ics' | grep RRULE | sort | uniq RRULE:FREQ=MONTHLY;INTERVAL=12;BYDAY=2MO RRULE:FREQ=MONTHLY;INTERVAL=12;BYDAY=3MO RRULE:FREQ=YEARLY;COUNT=3;INTERVAL=4 RRULE:FREQ=YEARLY;COUNT=4;INTERVAL=4 RRULE:FREQ=YEARLY;INTERVAL=1 ãªã ããã¯æ¥½ãç¡æ¡ä»¶ã§ DTSTAR
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