[D] = Dagaz?
“Dagaz is the counterpart to the rune Jera. Both refer to time, Jera on an annual cycle and Dagaz on a daily cycle. Both are runes of change – Jera is a rune of gentle change, Dagaz is a rune of bold change, for example, the burst of light at the moment of illumination. It contains within its energies the experience called ‘satori’, a spiritual awakening experience common in all cultures.
Archaeological evidence proves that Dagaz has been used as a symbol of Light for more than four thousand years. It is the rune of hyper-consciousness. Achievement of this state of mind SEEMS to be a relatively rare occurrence in human life at this stage of evolution. When chronicled, it marks the beginnings of the mission of a World Savior on Earth.”
Also the same symbol that the Extinction Rebellion uses.
http://runesecrets.com/rune-meanings/dagaz