CERTIFIED PROTECTION REQUIRED FOR OBSERVERS TO PREVENT DAMAGE TO EYESIGHT
by Sharon Rondeau
Points farther away from that trajectory, which is called the “path of totality,” will experience partial rather than complete darkness.
When the sun is completely covered by the moon, the solar corona will be the only visible part of the sun.
At the time of this writing, shortly after 8:00 a.m. EDT, there remains just over five hours until the total eclipse commences in Oregon.
The Great Smoky Mountains National Park is having a special viewing event on Monday for which tickets are required. The section of the park known as Clingmans Dome Road is closed to tourists and normal traffic through Monday night.
It is a safety hazard to look directly into the sun at any time, and to view the eclipse, NASA recommends “special-purpose solar filters,” also called “eclipse glasses” sold by the American Astronomical Society (AAS).
According to the National Weather Service, the state of Missouri will experience partial or total darkness, depending on the location. Some cities will experience more than 90% “obscuration” but not fall within the path of totality.
Dozens of events are planned throughout the country for Monday to observe the eclipse. The Oregon State Fairgrounds expect to be in total darkness for “close to two minutes” beginning at 10:18 a.m. PDT. According to NOAA, the “viewable percentage” will be 44% there.
In New York City, the viewable percentage is expected to be 65.9%, but obscuration will be only 71.3%.
The entire event will span about 90 minutes, NOAA reports.