Àdàkọ:Time measurement and standards
Time measurement and standards | ||
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Major subjects | ||
International standards | ||
Obsolete standards | ||
Time in physics | ||
Horology | ||
Calendar | Astronomical · Julian · Gregorian · Islamic · Lunisolar · Solar · Lunar · Epact · Intercalation · Leap year · Tropical year · Equinox · Solstice · Seven-day week · Week-day names · Calculating the day of the week · Dominical letter | |
Archaeology & geology | ||
Astronomical chronology | ||
Units of time | ||
Related topics |