But as night began to fall and it got darker and darker outside, they could tell, before they even went outside, that something different was going on, because indoors, with the curtains drawn across the windows, with the moon shining in, it was nearly as light as daytime!!
They were very excited to be allowed to go outside late at night (well, late from their point of view, because teddy bears usually go to bed very early, especially the little ones).