They know that the sun moves round the zodiac in the course of the year, so that different constellations and stars are visible in the night sky at particular seasons - useful for a simple calendar.
(different constellations and stars; are useful; L:in the night sky) (They; know; that the sun moves round the zodiac in the course of the year, so that different constellations and stars are visible in the night sky at particular seasons - useful for a simple calendar) Context(They know,List([0, 9))):(the sun; moves; round; in the course of the year)
They know,List([0, 9))
different constellations and stars They the sun
are useful know moves
L:in the night sky
that the sun moves round the zodiac in the course of the year, so that different constellations and stars are visible in the night sky at particular seasons - useful for a simple calendar
round in the course of the year