use DatetimeColumn.
use DatetimeColumn.

peterayeni/rapidsms,ehealthafrica-ci/rapidsms,ken-muturi/rapidsms,caktus/rapidsms,eHealthAfrica/rapidsms,caktus/rapidsms,dimagi/rapidsms,lsgunth/rapidsms,peterayeni/rapidsms,ken-muturi/rapidsms,unicefuganda/edtrac,peterayeni/rapidsms,lsgunth/rapidsms,eHealthAfrica/rapidsms,catalpainternational/rapidsms,catalpainternational/rapidsms,ehealthafrica-ci/rapidsms,caktus/rapidsms,catalpainternational/rapidsms,unicefuganda/edtrac,eHealthAfrica/rapidsms,unicefuganda/edtrac,peterayeni/rapidsms,lsgunth/rapidsms,dimagi/rapidsms,lsgunth/rapidsms,catalpainternational/rapidsms,ehealthafrica-ci/rapidsms,ken-muturi/rapidsms