Yes. First, go to the 'Import' tab in the Calendar V2 page part. Here, we have two options for importing a calendar. We can import an external feed, which will keep the calendar on the site up to date when changes are made to the external calendar, or import a .ics file, which is a one time import that will add one or more events.
In Calendar V2, it's important to note that external feeds and one time file imports must be in iCal format (also knowns as ICS format).