only for events that don’t have a specific location, such as Full Moon, Meteor Shower, Earth Day, etc.
- Autumnal Equinox - 09/23/2019 - All Day
- Take a Child Outside Week - 09/24/2019 - 09/30/2019 - All Day
- National Public Lands Day - 09/28/2019 - All Day
- The Big Sit! - 10/12/2019 - 10/13/2019 - All Day
- National Wildlife Refuge Week - 10/13/2019 - 10/19/2019 - All Day
- Free National Park Entrance Day - 11/11/2019 - All Day