We are pretty close to overcome the 1M (mega) count of opening_hours values in OSM. Also the amount of values which are machine readable is increasing from day to day. Almost all of those 1M values (97.8 %) follow the specification which greatly extends the use case of opening hours.

Thanks to all of you! 10 million is not far now :)

Ref: http://openingh.openstreetmap.de/stats/