Unknown over Pt. St. Lucie, FL

Pt. St. Lucie, FL

While at favorite ocean side restaurant in southern Saint Lucie county observed object in the sky. The object was to the north and overhead of our position slightly and perhaps in about the 2 o’clock relative position. It showed as a somewhat large white “ball” which made me think it was an evening star, however sunset was several hours away. Watching it for nearly 1 ½ hours it slowly moved from the east towards the west, slightly north of west. From the time I started watching it until the time I stopped, the star or object shifted across the sky from a 2 o’clock position to perhaps an 10 -11 o’clock position. Brought it to the attention of another couple with us and several others. Did not appear to be a weather balloon as it moved ever so slowly. Nor did it appear as a balloon as the wind was from the east and moved slowly. It also in my opinion was not a drone as most drones flights are somewhat erratic in nature. Attempted online to research evening planets and stars, where nothing is mentioned regarding and sightings of planets particularly in the daytime hours. (Was not twilight nor sunset conditions where indeed you can see evening stars / planets arise). Note FPL's St Lucie County Nuclear plant approximately 4 miles away