A ‘blood moon’ happens when Earth’s moon is in full eclipse and the usually whitish moon becomes red or ruddy-brown. The event would take place between 6:44pm to 9:21pm. 

It has no special astronomical significance and can be looked at with the naked eye.

The Head media and corporate communications (NASRDA), Dr. Felix Ale, told newsmen:

“The Eclipse in Nigeria will start around 6:44pm as partial eclipse and developed into a total eclipse around 7:30pm.

The Eclipse is expected to reach its peak around 9:21pm and wane from then until the eclipse ends around 12:30am of the 28th of July 2018.

“The total Eclipse will last for about 1 hour and 43 minutes, making it the longest total Lunar Eclipse of the 21st century.

No other Lunar Eclipse will be as long as this in the century.
https://www.xquisite360.com/2018/07/nigerians-will-see-the-blood-moon-from-644pm-to-921pm-read-details.html