what's inside: time

Learn about Time in Astronomy and get information on topics related to Time in Astronomy.

Measuring Devices

Learn about Astronomical Measuring Devices and get information on topics related to Astronomical Measuring Devices. See more »

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Gregorian calendar

Gregorian, gruh GAWR ee uhn, calendar is the calendar that is used in almost all the world today.

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Christian Era

Christian Era is the period from the birth of Jesus Christ to the present.

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Chronometer

Chronometer, kruh NOM uh tuhr, is an instrument that keeps time with extreme accuracy.