In the middle ages cheap candles were available to those with a bit of cash to flash. These candles were divided into six or twelve, depending on length, each segment approximated an hour's passing. Sun dials were available from the 11th Century here, paid for by the nobility. A famous one overhangs the door to St Gregory's Minster (a small church built in the 10th Century and re-dedicated in the 11th with inscribed sun dial added by the landowner) in Kirkdale near Helmsley, North Yorks.
Rush lights were another way of measuring time, but didn't last as long as candles.
On dark winter mornings the cock crow brought men from their beds to work in the fields or to watch the peasants in case they tried to run away (they were their lord's property). In the towns or cities where men were free there were town criers who called out time for curfew, and in the morning called out that curfew was over.
Mechanical clocks appeared in the fourteenth century, but only the rich had access to their own. Anyone else looked at the church clock (town or city only),
By the eighteenth century here there was a clock tax, so again only the rich had pocket watches or clocks. Others looked up at the church clock or through windows at inn clocks, where there were 'public clocks' with no glass over the dial to reflect the light outside. Though mechanical clocks and watches were available in the early (and in places up to mid-) 20th Century there were 'knockers up' in industrial towns or pit villages, to get men up for work (until the late 19th Century women and children from age 10 and over). Only from between the wars were watches and clocks affordable by the masses here, and of school children only those from well-off backgrounds had watches of their own.