taking many hours

The times, typically from about 9am to 5pm, Monday to Friday, when non-24/7 office workers are at their desks.

(electricity) A unit of energy equal to that done by one kilowatt acting for one hour.

plural of canonical hour.

The scheduled time for the start of some event, especially a military operation; H-hour.

(idiomatic) A point in time which is nearly too late; the last minute.

The three-hour intervals of daytime religious services appointed by canon law. / (Christianity) The divine office or prayers appointed to each of these times of day.

Of or pertaining to the rush hour.

A period of time equal to thirty minutes, half an hour. / The time of thirty minutes past any particular hour.

(aviation) The time from the moment the aircraft door closes at departure of a revenue flight until the moment the aircraft door opens at the arrival gate following its landing. Block hours are the industry-standard measure of aircraft utilization.