twenty minutes to six
In that case the Tartars , momentarily discouraged , would no doubt not make another attempt against the town for several days . Now the troops expected by the Grand Duke might arrive at any hour . The safety or the loss of Irkutsk hung only by a thread . On this day , the sun which had risen at twenty minutes to six , set at forty minutes past five , having traced its diurnal arc for eleven hours above the horizon . The twilight would struggle with the night for another two hours . Then it would be intensely dark , for the sky was cloudy , and there would be no moon . This gloom would favor the plans of Ivan Ogareff .