The longest lunar eclipse of the 21st century is coming on Friday: Here's what you need to know
https://phys.org/news/2018-07-longest-lunar-eclipse-21st-century.html
It doesn't get much better than that. The longest possible duration of a lunar eclipse is one hour and 47 minutes, according to EarthSky.org.
If you live in North America, you will not be able to see the marathon celestial event in person—unless you live in the far eastern part of Newfoundland. Unfortunately the event will be occurring during our daytime. But if you happen to be in eastern South America, Europe, Africa, the Middle East, Asia or Australia, you are in luck. The rest of us will just have to watch online.