All I gotta say is that the Placebo Effect is a powerful thing. Might as well place your trust in Brony Friendship Sparkles, Unicorn Tears, and Faerie Sprinkles, they'll probably have about the same effect on your drop rate.

I got 11 of my 12 within 5 hours of gameplay, and the magical special time for the 12th was during an hour that I'm usually at work, so yeah, I kinda call BS on it.