Assertion: total solar eclipse | /r/CapableOf | occur about every 18 months
Facets:
Source sentences:
text: This article was updated to correct a statement about the frequency of total solar eclipses, which occur about every 18 months, not two to five times a year as had been stated.
text: But total solar eclipses themselves are not uncommon, occurring about every 18 months, on average.