Precise declination of Moon
I just want 28.88 deg = 28 deg 53' confirmed. 


Yes, 0.88 degrees is equal to 53 arc minutes, so 28.88 deg = 28 deg 53'.

But the Yahoo source is off in its value. According to this reference, the maximum declination is closer to 28° 44' (28.73°).

Title: Extreme declinations of the moon.
Authors: Können, G. P. &amp; Meeus, J.
Journal: Journal of the British Astronomical Association, Vol. 82, p. 192 - 193
Bibliographic Code: 1972JBAA...82..192K
Available on NASA Astrophysics Data System.

That reference gives a declination of 28° 43' 21" on Sep 15 2006. Using the Lunar Polynomials from the Astronomical Almanac Online, which permit you to calculate the declination to a far greater precision than you can know the time, I calculate a value of 28° 43' 22". Thus, I trust the article.

28° 43' 22" = 28.723 degrees (Sep 15, 2006). The maximum between 1920 and 2050 is 28° 44' 11" = 28.736 degrees (March 15, 1932).