A "presidential inauguration" is when a newly elected president officially takes office and begins their term. It is usually a big event with ceremonies and speeches, marking the beginning of their presidency. Full definition
And what do you know, it's set to debut just a few days before our actual presidential inauguration. (slashfilm.com)
It also serves as a fundraiser to support organizations defending these rights and to be a platform for organization near the Trump Presidential Inauguration in January. (burnaway.org)