The light from the moon, in lux, on the night of the t^{\text{th}}t th t, start superscript, t, h, end superscript day of 201620162016, is \qquad l(t) = 0.25 - \sin\left(\dfrac{2\pi (t-2)}{28.5}\right)l(t)=0.25−sin( 28.5 2π(t−2) )space, l, left parenthesis, t, right parenthesis, equals, 0, point, 25, minus, sine, left parenthesis, start fraction, 2, pi, left parenthesis, t, minus, 2, right parenthesis, divided by, 28, point, 5, end fraction, right parenthesis. what is the period of the light from the moon? give an exact answer.