Tips on night time shooting

[Outlwbadboy]

What am I doing wrong? during the day I zero my scope perfectly..come night I'm shooting all around my bullseye....is it a optical illusion type of thing? during the day I get plenty of light in my scope tube but at night I still see my reticle because it's illuminated..so is my target.. could the lack of natural daylight be the problem??even though I'm still using illuminated optics??I  don't get it....help!!..lol..ty guys