[[File:Ecliptic path.jpg|240px|thumb|The Earth in its orbit around the Sun causes the Sun to appear on the celestial sphere moving over the ecliptic (red), which is tilted on the Equator (white).]]
[[File:north season.jpg|thumb|240px|Diagram of the Earth's seasons as seen from the north. Far right: December Solstice.]]
[[File:south season.jpg|thumb|240px|Diagram of the Earth's seasons as seen from the south. Far left: June Solstice.]]
[[File:equinox-0.jpg|240px|thumb|Day arc at 0° latitude (Equator)]]
[[File:equinox-20.jpg|240px|thumb|Day arc at 20° latitude]]
[[File:equinox-50.jpg|240px|thumb|Day arc at 50° latitude]]
[[File:equinox-70.jpg|240px|thumb|Day arc at 70° latitude]]
[[File:equinox-90.jpg|240px|thumb|Day arc at 90° latitude (Pole)]]
'''Điểm phân''' xuất hiện 2 lần trong năm, khi tâm [[Mặt Trời]] cùng nằm trong mặt phẳng [[Xích đạo|xích đạo]] của [[Trái Đất]]. Tại điểm phân thì thời gian [[ban ngày]] và [[đêm|ban đêm]] là bằng nhau.
