Summer Equinox 2024. Here's everything you need to know about the northern hemisphere's longest day of the year. — the northern summer solstice happens when earth’s tilt toward the sun is at a maximum and the sun is directly over the tropic of cancer, which is located at 23.5 degrees north latitude.
An equinox is one of two days in the year when the sun crosses the equator and day and night become equal in length. Summer solstice 2024 (beginning of astronomical summer) on the day of the summer (june) solstice, the solar disk, moving along the ecliptic, will fall into its northernmost.