The best replacement for solar eclipse is lunar eclipse.

The best alternatives to solar eclipse are rated as following:
★★★★★  lunar eclipse
★★★  new moon
★  lunar
★  during a lunar eclipse
★  partial solar eclipse
★  total solar eclipse
★  eclipse
  annular
  total lunar eclipse
  solar eclipse
  total eclipse

Your alternative for solar eclipse is not listed? Suggest!
Speaking about solar eclipse, one probably shouldn't forget about new moon.

Other search terms related to solar eclipse and their ratings are:
★★★★★ new moon
You have in mind a companion for solar eclipse and it is not yet here? Propose!



Google Trends

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solar eclipse
lunar eclipse
new moon