# Golapāda IV.1–5 — the celestial sphere and the two halves of the ecliptic
# North half (Meṣa→Kanyā) rides above the equator; south half (Tulā→Mīna) below.
reset
view.outside
observer.city Ujjain
show.horizon
show.cardinals
wait 1

show.celestial-equator
show.ecliptic
show.ecliptic-seasons
overlay.show Ecliptic meets the equator at the two equinoxes
wait 3

show.summer-solstice
show.winter-solstice
overlay.show Solstice arcs bound the Sun's swing north and south
wait 3

# isolate the Sun and walk it through the year
show.bodies
show.body-labels
hide.body-mercury
hide.body-venus
hide.body-mars
hide.body-jupiter
hide.body-saturn
hide.body-moon
show.body-sun
wait 1

jump.next.spring-equinox
overlay.show Vernal equinox — the Sun crosses onto the northern half · {date}
wait 3
jump.next.summer-solstice
overlay.show Summer solstice — greatest northern declination · {date}
wait 3
jump.next.fall-equinox
overlay.show Autumn equinox — back to the equator · {date}
wait 3
jump.next.winter-solstice
overlay.show Winter solstice — greatest southern declination · {date}
wait 3
overlay.clear