How do we measure the length of a year?

The video discusses the lunar calendar, which consists of 12 lunar months totaling about 354 days, and contrasts it with the Islamic calendar, a purely lunar system used for religious festivals. It also covers luni-solar calendars, which adjust months to align with seasons, and explains eclipse seasons and the Saros cycle. The video concludes by encouraging viewers to reflect on their understanding.

What is the significance of eclipse seasons in relation to the moon?

What is the approximate duration of the moon's orbit as mentioned in the text?