about midnight
`` We do n't want to wind the ponies , and we may have a hard day ahead of us to-morrow . '' `` It _ is _ quite a climb , '' admitted Nort . `` Are we going to ride all night ? '' `` No , we 'll turn in about midnight , '' said Bud . `` But this will give us a start so we can get to the Pocut River end of the flume by morning . We can stop any time you fellows want to . '' `` Oh , we are n't tired ! ''