Sunlight is increasing in March because Earth's tilt brings longer days.

Sunlight rises rapidly in March as the Northern Hemisphere tilts toward the sun; daylight saving time on March 8 shifts the clock but does not change how much sunlight there is.

Sunlight is becoming noticeably longer across the United States as winter transitions to spring. This shift reflects the tilt of Earth's axis, which causes the Northern Hemisphere to face the sun more directly in spring and summer. Daylight saving time on March 8 moves clocks forward but does not alter the actual amount of sunlight. March typically shows the most rapid monthly increases in daylight. What is known: - Earth’s axis is tilted about 23.5 degrees, and that tilt drives seasonal changes in day length. - Daylight has been increasing since the winter solstice on Dec. 21, 2025, and March often brings the steepest daily increases, averaging about three minutes per day according to the Old Farmer’s Almanac. - Nationwide gains from March 1 to March 31 range roughly from about 40–50 minutes in southern tips of Texas and Florida to about 100 minutes in northern parts of states such as North Dakota, Washington and Idaho. - City examples from the U.S. Naval Observatory show March increases of about 1 hour 7 minutes in Charlotte, 1 hour 24 minutes in Chicago, 1 hour 21 minutes in New York City, 1 hour 43 minutes in Seattle, 1 hour 41 minutes in Duluth, and about 45 minutes in Brownsville and Miami. - Daylight saving time begins at 2 a.m. on March 8; this shifts the clock time of sunrise and sunset but does not change the total hours of sunlight. Summary: The increase in daylight in March will be most pronounced in northern U.S. locations and contributes to the seasonal warming that follows. Daylight will continue to lengthen through the spring equinox on March 20 and until the summer solstice in June. Daylight saving time on March 8 changes clock time for sunrise and sunset but does not affect how much sunlight reaches each location.