Last Sunday, June 20, summer OFFICIALLY started.

This was the "longest day of the year" as our Sun was above the horizon for the greatest amount of time, with over 15 hours of daylight. So, you’d think that this also means the earliest sunrise and latest sunset would also happen on this day, but they don't.

The earliest sunrise always happens before the summer solstice. The earliest sunrise this year (in Waterloo) occurred on Sunday, June 13th at 5:31:22. On the first day of summer, June 20th, the sunrise was at 5:32:09 – 47 seconds later than the week prior.

In Cedar Rapids, the earliest sunrise of the year was June 13th at 5:30:30, 48 seconds earlier than the sunrise on June 20th.

But as the sun begins to rise later in the morning BEFORE summer begins, the sun sets later in the sky AFTER the first day of summer.

On Saturday night, June 26, the sun won’t dip below the horizon in Cedar Rapids until 8:46:23. It will set in Waterloo at 8:50:53. On Sunday night the sun will set one second earlier in both cities.

By the first day of Autumn (September 22), the sun will set nearly 1 hour and 45 minutes earlier, shortly after 7:00.

After the first day of summer, the amount of daylight begins to shrink. Between June 20th and June 30th, we’ll lose around three minutes of daylight.

By the first day of winter – the short day of the year – we will have lost over six hours of daylight.

But WHY are the later sun sets after the first day of summer?

According to Earthsky:

The latest sunsets comes after the summer solstice because the day is more than 24 hours long at this time of the year.

For several weeks, around the June solstice, the day (as measured by successive returns of the midday sun) is nearly 1/4 minute longer than 24 hours.

 

LOOK: Here is the richest town in each state

Just saying the names of these towns immediately conjures up images of grand mansions, luxury cars, and ritzy restaurants. Read on to see which town in your home state took the title of the richest location and which place had the highest median income in the country. Who knows—your hometown might even be on this list.

Snake Alley in Burlington, IA

Burlington, IA is just one hundred and fifty miles away from Waterloo and a hundred miles away from Cedar Rapids is one of the most see attractions for tourists. Ripley's Believe It or Not! voted Snake Alley as the #1 Odd Spot in America.