58585
Therefore , a lunar eclipse occurs about every six months , and often two weeks before or after a solar eclipse , which occurs during a new moon around the opposite node .
 new moon
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 new moon