You stated, "This date marks the official beginning of summer as the Northern Hemisphere angles itself at the point in its orbit closest to the sun, causing the longest day and shortest night of the calendar year." In fact, Earth is almost at its farthest point from the sun called aphelion, during the summer solstice. Around July 4th this year we will be farthest from the sun and closest to the sun in January called perihelion.
You stated, "This date marks the official beginning of summer as the Northern Hemisphere angles itself at the point in its orbit closest to the sun, causing the longest day and shortest night of the calendar year." In fact, Earth is almost at its farthest point from the sun called aphelion, during the summer solstice. Around July 4th this year we will be farthest from the sun and closest to the sun in January called perihelion.