First Day Of Summer 2024 Usa Holiday. Summer begins with the solstice on thursday, june 20, 2024, marking the astronomical first day of summer in the northern hemisphere. Et on june 20, 2024, accordi n g to space.com.

The holiday calendar for 2024 in the united states offers a mix of national celebrations and regional festivities, providing opportunities for rest, reflection, and connection. List of usa usa federal holidays 2024.