If that was about the Biscayne Bay pic... that was shortly after sunrise; we slept in that morning.
Looking perhaps a little west of south down the length of the Bay. The village of Key Biscayne lies just behind the line of mangroves on the left. Dinner Key is toward the right, or maybe just off the right edge.
Here's a shot taken in the late evening, earlier in the week at the start of the trip. We had anchored off the village that evening. The little cove was pretty full with the locals and their toys when we pulled in. An hour or so before sunset, they loaded up their PWC's and left us and one or two neighbors to soak in the downtown Miami skyline in peace. Stiltsville is just visible in the distance just off the point on the right.
Sunrise just kissing the mangroves in Card Sound, off North Key Largo.