Unless I'm mistaken or heard incorrectly, ALL of these sightings are after it gets dark out so that people can't actually see them. Which just makes more people want to eliminate them to protect themselves from whatever is behind them.
That number does not include daylight sightings, nor drone sightings. It’s just the Orbs (about which I have no theories). There have been daylight sightings, but I haven’t seen any numbers for them. Obviously they’re fewer since lights in the sky are much easier to see at night.