Скачать или смотреть ISS has zero sunsets for 7-10 days straight around June & December solstices

The ISS orbit stays at 51.6° inclination. BUT the EARTH orbits the SUN!
As Earth moves around the Sun throughout the year, the angle between the ISS orbital plane and the Sun's direction changes.

ISS has zero sunsets for 7-10 days straight when the angle between ISS orbital plane and Sun (β) exceeds 70°

Late June (around summer solstice ~June 21)
Late December (around winter solstice ~Dec 21)
Each period lasts 7-10 days

Low Beta (β ~0°) = Maximum shadow:

March equinox (~March 20)
September equinox (~Sept 22)
ISS spends most time in Earth's shadow

THE PATTERN:
JANUARY ━━━━━━━━━━━━━━━━━━━━━━━━━━
FEBRUARY
MARCH ← Low β (equinox) - max shadow
APRIL
MAY
JUNE ← High β (solstice) - zero sunsets ☀️☀️☀️
JULY
AUGUST
SEPTEMBER ← Low β (equinox) - max shadow
OCTOBER
NOVEMBER
DECEMBER ← High β (solstice) - zero sunsets ☀️☀️☀️

@curiousclubtv
Instagram   / curiousclubtv  
Facebook   / curiousclubtv