German phrase
Ich habe ~ in den Kalender eingetragen.
Meaning
I've put ___ on the calendar
When to use it
It confirms a calendar entry. It is a natural, concise way to report a completed entry.
Example dialogue
Hast du den Zahnarzttermin schon eingetragen?
Have you put the dentist appointment on the calendar yet?
Ich habe den Zahnarzttermin in den Kalender eingetragen.
I've put the dentist appointment on the calendar.