midnight
They had a filling dinner and the others turned in at dusk and were quickly asleep . Jason , tired from the labors of the trip and heavy with food , forced himself to remain awake , trying to keep alert for trouble both from within and from without . When he became too sleepy he paced around the camp until the cold drove him back to the shelter of the still-warm boiler . Above him the stars wheeled slowly and when a prominent one reached the zenith he estimated it was midnight , or a bit after . He shook Mikah awake . `` You 're on now . Keep your eyes and ears open for anything stirring and do n't forget a careful watch there , '' he jerked his thumb at Snarbi 's silent form .