Ramen leaves his home every day at 7:40 am and reaches his office at 9:46 am. One day, he left his home at 7:40 am but travelled one-fourth of the distance at \(\frac{{ 6}}{7}\) of the usual speed and the rest of the distance at \(\frac{{ 6}}{5}\) of the usual speed. At what time did Ramen reach office on that day?