# Golapāda IV.27 — cara, the ascensional difference
# The Sun's rising point swings north and south of due east through the year;
# that swing is the cara, and it makes days lengthen and shorten.
reset
view.desktop
observer.city Ujjain
show.horizon
show.cardinals
view.look east
wait 1

show.bodies
show.body-labels
hide.body-moon
hide.body-mercury
hide.body-venus
hide.body-mars
hide.body-jupiter
hide.body-saturn
show.body-sun
wait 1

jump.next.sunrise
time.lock-tod
overlay.show Time-of-day held at sunrise; now the date advances
speed.days-per-sec 4
repeat 12
  overlay.show {date} — sunrise azimuth {sun.az}° from north
  wait 3
end
speed.real-time
time.unlock-tod
overlay.show The north–south migration of that azimuth is the cara
wait 4
overlay.clear