Um...if a new president isn’t sworn in on exactly 354 days, DC will burn.
If DC is already burning there’s not gonna be an inauguration. If people all over the country are trying to keep alive in the midst of rioting, food shortages, no electricity, no gasoline, no internet, no phone, etc, and possibly sleeper cells committing acts of terror to take over state governments, etc.... there will be no inauguration. Survival will be all anybody can manage.