(Q7076694)
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Wikipedia(6 entries)
- elwiki Οκταετηρίδα
- enwiki Octaeteris
- eswiki Octaeteris
- itwiki Octaeteride
- ruwiki Октетерис
- shwiki Oktaeteris
period of eight solar years, after which the moon phase occurs on the same day of the year plus one or two days