http://www.calendar-365.com/calendar/
The length of day on March 31 was 12h 38m. The length of day today will be 14h 38m
The length of day March 31 last year was 12h 41m
The length of day May 21 of last year was 14h 40m
Your hypothesis makes no science sense.
There is a scientific reason for longer days this time of year. It is called “Summer.” But it happens every year, amazingly, at this same time.
This guy reminds me of my mother who, as a young girl growing up in the 1920's, couldn't figure out how the May beetles always knew the date so that they could turn into June bugs exactly on the first day of June.
Of course, grandpa would never tell her the secret.
As the sun moves further north during the summer months, the says are longer in the northern hemisphere.
The days are considerably shorter in the southern hemisphere in the summer months.
The short of this: in the summer, the sun travels farther and farther above the equator until the first day of summer is the longest day in the northern hemisphere.
I think the larger part of the poster’s hypothesis is based on the fact that this year, vs last year, the cold has lingered much later into the season. That is surely true in this area (NOVA), where we rarely see 40 degree temps in mid-May, yet last week our temps ranged from 41 (overnight) to one day hitting 82, which is a more typical daytime temp here by mid to late May.
It sure doesn’t feel like Summer. It doesn’t even feel like Spring some days. This year our mid-day high temps have ranged primarily in the 60s. Throw in a couple extra hours of daylight, and the hypothesis isn’t so far out.
There is a scientific reason for longer days this time of year. It is called “Summer.” But it happens every year, amazingly, at this same time.