Dagaz is the letter D
Anglo-Saxon Rune Poem (from ragweedforge.com)
Day, the glorious light of the Creator, is sent by the Lord;
it is beloved of men, a source of hope and happiness to rich and poor,and of service to all
As an interesting counterpoint to the energies of Jera, August first is marked by Dagaz, the rune of Day, change, and awakening. While the energies of Jera are slow, patient and methodical, Dagaz is quick to change, abrupt, and changeable. In their relationship, it could be seen that Dagaz is aggressive change that is being set in motion, to be followed through with Jera, to sustain, encourage and nurture it, so that those changes may become something new.