Come up with a question and reasoning that would justify this answer: August 21 , 2017
The question is: The next solar eclipse (Partial) will occur on February 15, 2018; the last solar eclipse (Total) occurred on August 21, 2017.

Answer this question based on the passage: when was the last time a total eclipse happened?
Step-by-step reasoning process: The relevant information is: The next solar eclipse (Partial) will occur on February 15, 2018; the last solar eclipse (Total) occurred on August 21, 2017.