I think the analysis that Ron and Cristina are later than Jet and Cord is correct. There's no reason for local production to refill the hay bales, and in the R/C cap you can clearly see that the front row is down to one bale, and the row behind that seems to be done to two. OTOH, there seems to be nearly full rows of hay bales behind Jet and Cord; and it seems to me that the sun is at a lower (i.e., earlier time) angle.
Also notice that Cord came prepared; he's got a glove on one of his hands. I can't tell about Jet, but it's possible he is wearing a glove on one hand as well.