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  2. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    Lunar phases were used to mark shorter periods of time; the Yaraldi of South Australia being one of the few people recorded as having a way to measure time during the day, which was divided into seven parts using the position of the Sun. [5] All timekeepers before the 13th century relied upon methods that used something that moved continuously.

  3. Roman timekeeping - Wikipedia

    en.wikipedia.org/wiki/Roman_timekeeping

    The natural day (dies naturalis) ran from sunrise to sunset. [6] The hours were numbered from one to twelve as hora prima, hora secunda, hora tertia, etc. To indicate that it is a day or night hour, Romans used expressions such as for example prima diei hora (first hour of the day), and prima noctis hora (first hour of the night). [7]

  4. Candle clock - Wikipedia

    en.wikipedia.org/wiki/Candle_clock

    An example of a German candle clock. A candle clock is a thin candle with consistently spaced marking that, when burned, indicates the passage of periods of time. While no longer used today, candle clocks provided an effective way to tell time indoors, at night, or on a cloudy day.

  5. Traditional Chinese timekeeping - Wikipedia

    en.wikipedia.org/wiki/Traditional_Chinese...

    The time between each gēng is 1 ⁄ 10 of a day, making a gēng 2.4 hours—or 2 hours 24 minutes—long. The 5 gēngs in the night are numbered from one to five: yì gēng ( 一 更 ) (alternately chū gēng ( 初更 ) for "initial watch"); èr gēng ( 二更 ); sān gēng ( 三更 ); sì gēng ( 四更 ); and wǔ gēng ( 五更 ).

  6. History of sundials - Wikipedia

    en.wikipedia.org/wiki/History_of_sundials

    A sundial uses local time. Before the coming of the railways in the 1840s, local time was displayed on a sundial and was used by the government and commerce. Before the invention of the clock the sundial was the only way to measure time. After the invention of the clock, the sundial maintained its importance, as clocks needed to be reset ...

  7. Early world maps - Wikipedia

    en.wikipedia.org/wiki/Early_world_maps

    At the time, one of the most reliable maps of the two hemispheres was the first large-scale map drawn in Armenian. [54] The world map was created in a Western cartographic style. To engrave the map's copper plates, the Schoonebeek brothers, who were considered the best masters, were employed.

  8. History of timekeeping devices in Egypt - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping...

    Ancient Egyptian sundial (c. 1500 BC), from the Valley of the Kings, used for measuring work hour. Daytime divided into 12 parts. The ancient Egyptians were one of the first cultures to widely divide days into generally agreed-upon equal parts, using early timekeeping devices such as sundials, shadow clocks, and merkhets (plumb-lines used by early astronomers).

  9. History of calendars - Wikipedia

    en.wikipedia.org/wiki/History_of_calendars

    The unlucky five-day period was known as Uayeb, and was considered a time which could hold danger, death and bad luck. [56] The Vague Year began with the month of Pop. The Maya 20-day month always begins with the seating of the month, followed by days numbered 1 to 19, then the seating of the following month, and so on.