Since confirming that Penny is pregnant, and comparing her to the other girls, I'm pretty confident that the first six girls will have their kids in February. They are all much bigger around and heaver-walking than Penny. So if Penny really does have twins in there and is due March 16th, the other girls must be a good couple of weeks ahead of her. Then there is #15 (now called Quince since "fifteen" was getting old), who got into the game on October 5th. Her earliest kidding date would be March 4th, but I'm guessing she'll drop a week later than that.
As I mentioned back in June, Penny was supposed to breed with Loki, but not this year. So this year is her bonus Jared year, I suppose.
ETA: I wonder if Jared is being frisky because it is actually ABOVE FREEZING for the second time in two weeks?