Calendar (software)
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| developer | Apple Inc. |
| Publishing year | September 10, 2002 |
| Current version | 11.0 (2751) (2019) |
| operating system | macOS |
| category | Office application |
| License | Proprietary |
| German speaking | Yes |
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Calendar (up to Mac OS X version 10.7 iCal , in the English version Calendar ) is a program for managing appointments supplied by Apple with the macOS operating system . It implements the iCalendar standard ( RFC 5545 , formerly 2445). Steve Jobs introduced the program on July 17, 2002 at Macworld New York.
The program supports different calendars and per calendar appointments and tasks. Each calendar can be assigned a color, and each individual calendar can be published with a WebDAV server. You can also subscribe to other published calendars (e.g. public holidays , cinema releases , etc.). Publishing and subscribing to a calendar at the same time - necessary e.g. B. for group calendars - is however not possible.
Appointments can be announced with an acoustic signal, a message, e-mail or the start of a program. Above all, the "start" of any file, URL or program makes calendar a flexible cron replacement and enables time-controlled, even repeated, execution of programs. Similar to anacron , the program is also executed if the computer was switched off until the "alarm time" and is switched on later.
Calendar is tightly integrated into macOS. For example, people can be loaded from the operating system's address book for appointments , and birthdays are displayed in a separate calendar. Calendars can be synchronized with other devices via iCloud and similar online services, e.g. B. Smartphones and tablets (in previous versions this was done via iSync ). It is also possible to inform other people of an event by email, which - if Apple Mail is used - is immediately transferred to the program.
Per AppleScript tasks, appointments and calendar can be manipulated. With the combination of options, B. Implement repetitive tasks: New tasks are created via AppleScript. This applescript is in turn executed from a weekly appointment by calendar itself.
Microsoft also supports the iCal protocol from its Office application Outlook 2007 to display multiple calendars.