Daylight increase is not a linear function.
It is very low at each solstice and equinox, slowly increases to mid term and then decreases again.
Latitude also needs to be taken into account.
Four minutes
None. There are 1,440 minutes in each Alaska day, just as there are everywhere else in the US.
1 day is 24 hours, and each hour is 60 minutes. Each day, therefore, is 1440 minutes. 1440 * 37 = 4320 minutes ■
30-50 minutes daily
Each day has 24 hours. Each hour 60 minutes. So there are 24 x 60 = 1440 minutes in one day. In 30 days there are 30 x 1440 = 43200 minutes.
There are 1,440 minutes in 1 day. 1 day = 24 hours. 1 hour = 60 minutes. 1 day = 24 hours x 60 minutes/hour = 1440 minutes.
You run 900 second each day
Since each hour has 60 minutes and each day has 24 hours and each year has 365.25 days, 4 years is equivalent to 2,103,840 minutes.
Each day has (exactly) 24 hours, each with (exactly ) 60 minutes. Therefore, each day has 24 X 60 equals (exactly) 1440 minutes. 21,573,834/1440 = 14,981.829 days, to the justified number of significant digits.
None - each and every day is 24 hours, 1440 minutes long. [In fact, as the rotation of the earth is slowing, each day is actually getting minutely fractionally longer.]
Every Day the Earth gains more time. It is only about three minutes that are gained each day, after the winter solstice.
No matter where you are on the planet - the day lengthens by four minutes each day, after the winter equinox, up to the summer solstice.