Open RPMSG File

Open ICS File

ICS file extension is used to store calendar information in a format specified by Internet Calendaring and Scheduling Core Object Specification. iCalendar is more frequently used to refer to ICS format.

ICS is a text-based format, so it is possible to open ICS files using a text editor if needed. All of the data in ICS file is easy to interpret without a specialized software. As you can see from an example below ICS file consists of name-value pairs where each pair specifies a property of calendar event. ICS files also support more complex structures nesting using BEGIN and END methods. Properties which are limited by BEGIN and END clauses form a component. Multiple components types are supported by ICS format including VCALENDAR, VJOURNAL, VEVENT, VFREEBUSY, VTIMEZONE, VALARM, VTODO.

Full specification of the ICS file format is available at the Internet Engineering Task Force website.

To open ICS file you can either used a standalone software packages like Microsoft Outlook or export ICS file into online calendars like Google Calendar, Apple Calendar, Yahoo! Calendar and others.

Also you can open ICS file in a text editor and paste its content into iCalendar Viewer tool. This tool will parse contents of the file and will build a tree like representation of the event. Also, it will display an event in a nice human-readable format.

IFB file format is a subset of ICS and is used to store free-busy information. It could be quite useful when posting a free-busy schedule online. IFB specification is available at the same place as ICS.

iCalendar data format could also be used to store events information in web pages. It could be embedded in a hCalendar microformat.

iCalendar data is transported via e-mail and internet using text/calendar MIME type.

iCalendar and ICS format are royalty free and released to public domain. This made iCalendar the most popular event storage format on the internet.
BEGIN:VCALENDAR
METHOD:REQUEST
PRODID:Microsoft Exchange Server 2010
VERSION:2.0
BEGIN:VTIMEZONE
TZID:Pacific Standard Time
BEGIN:STANDARD
DTSTART:16010101T020000
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=1SU;BYMONTH=11
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:16010101T020000
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=2SU;BYMONTH=3
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
ORGANIZER;CN=John Dow;SENT-BY="MAILTO:[email protected]":MAILTO: [email protected]
ATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN=Nas Daq:MAILTO:[email protected]
DESCRIPTION;LANGUAGE=en-US:meet in Cafe in Larnaca
SUMMARY;LANGUAGE=en-US:4:30pm
DTSTART;TZID=Pacific Standard Time:20170808T163000
DTEND;TZID=Pacific Standard Time:20170808T170000
CLASS:PUBLIC
PRIORITY:5
DTSTAMP:20170808T151051Z
TRANSP:OPAQUE
STATUS:CONFIRMED
SEQUENCE:0
LOCATION;LANGUAGE=en-US:meet in Cafe in Larnaca
X-MICROSOFT-CDO-APPT-SEQUENCE:0
X-MICROSOFT-CDO-OWNERAPPTID:-1119320095
X-MICROSOFT-CDO-BUSYSTATUS:TENTATIVE
X-MICROSOFT-CDO-INTENDEDSTATUS:BUSY
X-MICROSOFT-CDO-ALLDAYEVENT:FALSE
X-MICROSOFT-CDO-IMPORTANCE:1
X-MICROSOFT-CDO-INSTTYPE:0
X-MICROSOFT-DISALLOW-COUNTER:FALSE
BEGIN:VALARM
DESCRIPTION:REMINDER
TRIGGER;RELATED=START:-PT15M
ACTION:DISPLAY
END:VALARM
END:VEVENT
END:VCALENDAR