The phrase "to update the calendar" means to make changes or add new information to a schedule or planner that shows days and events.
Sentences with «to update the calendar»
We offer an extensive publications database in multiple languages, negotiation news and blogs, and a regularly updated calendar of climate events. (undpcc.org)
Will your assistant update your calendar at your request or will he or she be able to work and manage your calendar? (inc.com)
Buyers of the book receive a free update every calendar quarter. (tjbllc.com)