Hey guys can you help me with this one question please and maybe explain the process.

The daylight time (time between sunrise and sunset) varies sinusoidally throughout a year. The longest day of the year is the 170th day with a daylight time of 15 hours. The Shortest daylight time occurs on the 353rd day of the year with a daylight time of 6 hours.

It's a two part question:

What is the period and amplitude: I figured A=4.5 and P=365

And then it asks to create a graph of this model and generate a specific equation with time t=0 being the first day of the year.

So could you guys explain how to graph this equation? She also said there is a vertical and horizontal shift and that C/B=170.

I was sick the day my teacher was explaining problems like these and am totally lost.