2019-07-12 Date and time — General recurrence representation CC/FDS 18012:2018 csd/cc-18012.xml csd/cc-18012.html csd/cc-18012.pdf csd/cc-18012.doc csd/cc-18012.rxl en 2018 CalConnect CalConnect CalConnect 2018-09-10 1 en final-draft VCARD, CALENDAR