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Summer solstice occurs when the Earth's rotational axis is most inclined toward the star it orbits. The Sun reaches its highest position in the sky on this day, and the Earth's gravity pulls humans toward beaches.

June's full Moon reaches its moment of fullness at 8:07 p.m., but is not visible in Duluth until the 9:35 p.m. moonrise. June is known as Ode'Imini-Giizis or the Strawberry Moon among the Ojibwe. It signifies the beginning of summer or niibin. It is a time to celebrate life and rekindle friendships. From Farmers' Almanac: "This name was universal to every Algonquin tribe. However, in Europe they called it the Rose Moon. Also because the relatively short season for harvesting…

The July Moon reaches its moment of fullness at 5:17 a.m., just before it sets in Duluth at 5:19 a.m. From Farmers' Almanac: "July is normally the month when the new antlers of buck deer push out of their foreheads in coatings of velvety fur. It was also often called the Full Thunder Moon, for the reason that thunderstorms are most frequent during this time. Another name for this month’s Moon was the Full Hay Moon."

Day and night are of approximately equal duration all over the planet on this day. The official Central Standard Time moment of equinox this year is 7:43 p.m.

The dark nights are upon us; it's time to fall back. The good end of the bargain is everyone gets a 25-hour day on Sunday. If your clocks are advanced enough to do the work for you, they should jump backward in the wee hours of Sunday morning from the last moment of 1:59 a.m. to 1 a.m. If not, society expects you to push the buttons or twist the dials and manage the time-traveling yourself.

It’s the northern hemisphere’s shortest day and longest night of the year. No matter where you live on Earth, the solstice happens at the same instant: Dec. 21 at 3:20 a.m. CST. It’s when the sun reaches its farthest southward point for the year, and when noontime shadows are the longest of the year.

Sunday at 2 a.m. is the official time to set clocks ahead one hour. Those who do not are living in the past.

Day and night are of approximately equal duration all over the planet on this day. The official Central Standard Time moment of spring equinox in the northern hemisphere is 4:01 a.m.