Documents by M. Douglass
2011, RFC6321: xCal: The XML Format for iCalendar
2014, RFC7265: jCal: The JSON Format for iCalendar
2016, RFC7808: Time Zone Data Distribution Service
2016, RFC7953: Calendar Availability
2021, RFC9073: Event Publishing Extensions to iCalendar
2022, RFC9253: Support for iCalendar Relationships