How many more seconds are there of sunlight each day after winter begins?

Answer 1

That depends upon your latitude.
At the north pole, the answer is zero for many weeks after the winter solstice (it's dark 24/7).

At the equator, there is 12 hours of daylight every day of the year.

Answer 2

It changes every day . Until the solstice days get shorter after the solstice they start getting loneger. It would also depend on where you live