Two Lunar eclipses and three solar eclipses will occur this year. On January 31 there would be a total Lunar eclipse in which a rare blue moon would be seen. So when do the Lunar and Solar eclipses occur in 2018. The last total lunar eclipse took place on September 28 2015. The one to take place on January 31 this year is expected to last at least 77 minutes. Watch this video to find out more about when will eclipses take place in 2018.