To understand why it seems brighter on some days, we need to consider a few factors:

* Lunar Phase: The moon goes through phases, changing how much of its sunlit surface we see from Earth. A full moon, when the entire sunlit side faces us, appears brightest.

* Atmospheric Conditions: Clear skies allow more sunlight to reach the moon and reflect back to us. Clouds and haze can dim the moon's appearance.

* Position in the Sky: The moon's brightness can also seem different based on its position in the sky. When it's high overhead, it's closer to us and might appear brighter.

So, if you're seeing a particularly bright moon today, it's likely a combination of these factors. It could be a full moon, or a close-to-full moon, with clear skies and a favorable position in the sky.