You really want to begin any startup during an equinox. That's when you can stand an egg on it's end without falling over. It's a magical time! But seriously,

You really want to begin any startup during an equinox. That's when you can stand an egg on it's end without falling over. It's a magical time! But seriously, what a silly thing to worry about. It's like asking, should I serve Coke or Pepsi at my startup? Which will make me more successful?