Matches in DBpedia 2016-04 for { ?s ?p "Timeline of time measurement technology 270 BCE - Ctesibius builds a popular water clock, called a clepsydra 46 BCE - Julius Caesar and Sosigenes develop a solar calendar with leap years 11th century - Sets of hourglasses were maintained by ship's pages to mark the progress of a ship during its voyage 11th century - Large town clocks were used in Europe to display local time, maintained by hand 1335 - First known mechanical clock, in Milan 1502 - Peter Henlein builds the first pocketwatch 1582 - Pope Gregory XIII, Aloysius Lilius, and Christopher Clavius introduce a Gregorian calendar with an improved leap year system 1655 - Cassini builds the heliometer of San Petronio in Bologna, to standardise Solar noon. "@en }
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- Timeline_of_time_measurement_technology comment "Timeline of time measurement technology 270 BCE - Ctesibius builds a popular water clock, called a clepsydra 46 BCE - Julius Caesar and Sosigenes develop a solar calendar with leap years 11th century - Sets of hourglasses were maintained by ship's pages to mark the progress of a ship during its voyage 11th century - Large town clocks were used in Europe to display local time, maintained by hand 1335 - First known mechanical clock, in Milan 1502 - Peter Henlein builds the first pocketwatch 1582 - Pope Gregory XIII, Aloysius Lilius, and Christopher Clavius introduce a Gregorian calendar with an improved leap year system 1655 - Cassini builds the heliometer of San Petronio in Bologna, to standardise Solar noon. ".
- Q1394076 comment "Timeline of time measurement technology 270 BCE - Ctesibius builds a popular water clock, called a clepsydra 46 BCE - Julius Caesar and Sosigenes develop a solar calendar with leap years 11th century - Sets of hourglasses were maintained by ship's pages to mark the progress of a ship during its voyage 11th century - Large town clocks were used in Europe to display local time, maintained by hand 1335 - First known mechanical clock, in Milan 1502 - Peter Henlein builds the first pocketwatch 1582 - Pope Gregory XIII, Aloysius Lilius, and Christopher Clavius introduce a Gregorian calendar with an improved leap year system 1655 - Cassini builds the heliometer of San Petronio in Bologna, to standardise Solar noon. ".