Epoch_2000 Temporal Epoch Calculator
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Description: Excel spreadsheet calculates temporal variation in astronomic constants, obliquity of the ecliptic, and illumination angles at any specified latitude. You need only input a date or the latitude.
An introduction to research considerations regarding temporal variations in archaeoastronomical and archaeogeodetic variables. So-called astronomical "constants," such as days per year, are in fact temporally variable. Formulas for this variation have been refined by modern astronomers using ancient Chinese and Mesopotamian eclipse records. The inclination angle of the earth's axis of rotation (obliquity of the ecliptic) also changes with time. In previous epochs the duration of solar and lunar orbit and the apparent position of the moon and sun, for example solstice rise/set azimuths, were different than today. Some of these differences are significant enough to have analytical utility, and, if properly understood and employed, are logical tools for archaeotemporal questions.
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| Page title: | Temporal Epoch Calculations |
| Keywords: | |
| Description: | Research considerations regarding temporal variations in archaeoastronomical and archaeogeodetic variables. Download an Excel spreadsheet to calculate temporal variation in astronomic |
| IP-address: | 206.188.193.142 |
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| NS | Name Server: NS33.WORLDNIC.COM Name Server: NS34.WORLDNIC.COM |
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| Date | Creation Date: 14-aug-2001 Expiration Date: 14-aug-2014 |