Bus schedule from Kumamoto to Kurokawa onsen

Hi,
I intend to travel to Kurokawa onsen on January 11, 2013.

Using the timetable below (Japanese only),
http://www.kyusanko.co.jp/sankobus/kyushu_odan/index.php

could someone please advise the earliest bus departure from Kumamoto to Kurokawa onsen, and then the earliest return departure (Kurokawa to Kumamoto) which will be taken the next day.

Also, could you please advise whether buses run during this period (Jan 10 - Jan 12, 2013) and fares.

If anyone thinks there is a more convenient way to get to Kurokawa onsen, let me know.

Many thanks.

According to the following schedule, the earliest bus from Kumamoto station leaves at 8.04 and arrives Kurokawa at 11.26.
http://www.kyusanko.co.jp/sankobus/kyushu_odan/table/kyushuodan_tt1.ht...

Returning bus leaves Kurokawa earliest at 10.35 and arrives Kumamoto at 13.53
http://www.kyusanko.co.jp/sankobus/kyushu_odan/table/kyushuodan_tt2.ht...

One-way bus fare is 2000 yen.

Thank you very much, William!

I also appreciate this answer... but I was wondering about the latest bus that leaves kurakawa to return to kumamoto.

I have read this is 2030 in some guide sites but would like to confirm this answer with those who can interpret the above site!

I was considering a day trip from kumamoto to kurokawa onsen on sept. 5, 2012... yes in 2 weeks! so any help would be appreciated!

http://www.kyusanko.co.jp/sankobus/kyushu_odan/table/kyushuodan_tt2.ht...

According to the above schedule, the latest bus leaves Kurokawa Onsen 17.26 and arrives Kumamoto Station 20.02.