- The Columbia Zen Center One Drop Zendo We are students of Shodo Harada Roshi living in Columbia, Missouri, who invite anyone to join us for a regular schedule of group meditation. Our current sitting hours are: Monday through Friday: 7:00 to 7:45 a.m. Wednesday: 5:30 to 6:30 p.m. Sunday: 2:30 to 5:00 p.m. (with chanting of sutras at 4:00) The date of our next all-day sit will be announced as ...zen.columbia.missouri.org