Analysis of Sonnet 33: Full many a glorious morning have I seen

Full many a glorious morning have I seen
Flatter the mountaintops with sovereign eye,
Kissing with golden face the meadows green,
Gilding pale streams with heavenly alchemy;
Anon permit the basest clouds to ride
With ugly rack on his celestial face,
And from the forlorn world his visage hide,
Stealing unseen to west with this disgrace.
Even so my sun one early morn did shine
With all-triumphant splendour on my brow.
But out, alack! He was but one hour mine;
The region cloud hath masked him from me now.
    Yet him for this my love no whit disdaineth;
    Suns of the world may stain when heaven's sun staineth.