2019-05-06 Calendaring and scheduling — Support for Series in iCalendar CC/CD 51003:2018 csd/cc-51003.xml csd/cc-51003.html csd/cc-51003.pdf csd/cc-51003.doc csd/cc-51003.rxl en 2018 CalConnect CalConnect CalConnect 2018-11-30 1 en committee-draft CALENDAR