Please help me

E(t) models the daily amount of energy (in kilojoules, kJ) that a solar panel in Pago Pago generates, t days
after the autumn equinox. Here, t is entered in radians.
E(t) = 624 sin
27
-t) + 8736
365
What is the first day after the autumn equinox that the solar panel generates 8400 kJ?
Round your final answer to the nearest whole day.
No