no no and no
poison? acid?
LAVA!
hint: each of the sisters on a normal day with no time change is 21 hours and 3 hours
clock hands or clocks
there immortal
Venus???
Fire?
EDIT: The sun, maybe?
that is the answer then? that they are immortal?
pompom is extremely close with the sun but what else?
mountains?
geysers volcanoes.
its close to the sun
mercury venus mars rays
mercury
none of those hint you see it after 7:00 p.m.
The moon? Stars?
no no and no