diary
noun [ C ]
uk/ˈdaɪəri/ usplural diaries WORKPLACE UK ( US calendar)
a book or piece of software with a space or page for each day, in which you record future arrangements, meetings, etc.:
in sb's diary Is there anything in your diary for tomorrow afternoon?
Please check the appointments diary before scheduling a meeting.
She has a very full diary this week but she could see you next week.
Our CEO is seeking a part-time diary secretary to help him manage his appointments efficiently.
a record of what has happened during a period of time:
It may help to keep a diary of problems you encounter.
His diary entries for July describe the final stages of the project.