The sun re-sets

Good morning everyone.A short while ago, I returned from reciting Birkas (or Birkat) HaChamah with about 20,000 of my neighbors (no exaggeration) in a park at the top of the mountain on which our neighborhood is built. We said the morning prayers at sunrise (as I have nearly every day for the last 13 years), and then we went out to the park and made the blessing. After the blessing, I completed a