Answer:
This answer you seek is unavailable.
Explanation: They're numerous "Vertical time lines" that invisibly map off the earth. These points are from North to South at the poles. As the sun passes each line it is accounted for 12:00pm. At that time the sun is at it's highest point directly above the horizon. Given the fact that Nigeria is within several lines of reference a true time can not be made other that a reasonable guess. Part 2 of the question does not have enough content to support an answer.
