I totally know what you mean about them being short with/about the kids. H rarely does it, but when he does, I can see the shock/hurt in their faces. I try not to give H the 'look', like 'let up', but darnit, they don't deserve that. They are just going about their happy innocent lives.
Try to calm a little at work and I bet tonight will be different. I don't like the moody days either. Its so hard to not let their moods affect us.