If the 300m people lived in the same area and you got a true random sample.

Sunsets at 9:09 today in Michigan

Sunsets at 8:04 today in California

Sunsets at 8:34 today in North Carolina

Sunsets at 7:57 today in Alabama

Sunsets at 7:38 today in Arizona (They are on standard time)

Sunsets at 7:13 today in Hawaii

Sunsets at 11:36 today in Alaska

Someone in Arizona might want the sun to set at 7:38. It’s blazing hot all day.

Someone in Michigan might be fine with sunsetting at 8:08 with standard time.

Someone in Alabama might not want the sun to set at 6:57.

Someone in Hawaii probably doesn’t want the sun to set at 6:13.

Even if you split up the 1000 people to equally represent all states, that’s only 20 people per state.