three o'clock
`` They are always a bit impatient for the balance this time of the year , '' Mr. Mosby offered in explanation . An hour 's work sufficed to find the trouble . It was in the carrying forward of a single account . Once found , the rest was very simple , and at three o'clock Uncle Buzz slammed the ledger shut with an air of complete satisfaction , walked confidently through the door into the adjoining office with his little sheaf of papers , and returning reached for his hat . `` Burrus is out , '' he said crisply . `` We wo n't wait . '' Joe likewise reached for his hat .