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Measurement of Time

I minute.

I hour.

I day. 3654 days....... 365d., 5h., 48m., 49s.

I Julian year. .I solar or tropical year.

I sidereal year.

I anomalistic I week. 365d., 6h., 9m., I2S 28 days.

I lunar month. 365d., 6.13m., 49.3s. 28, 29, 30 or 31 days.

I cal. month. year. 12 calendar months I year. 10 years.

I decade. 365 days. 366 days.

I com. year. 10 decades or 100 years.. I century.

I leap year.

Year.

I = TIME.

EQUIVALENTS. = Minute. 625,960 1,440 60 = Day. 3654 = Hour. 8766 I - 24 = I = Second.

Scale of units. = = 31,557,600 86,400 3,600 60 60 24 I I = 60 3654 The tropical (or solar year) and the sidereal years are the same, and the tropical is only an anticipated solar mark before the sidereal year is completed. The anomalistic year is an advance of the orbit as part of the solar system in space, and its excess over the sidereal year is the stellar measure of the annual advance of the whole system; the mean velocities are uniform, and the times as the spaces. The diurnal revolution of the earth causes the difference in time, etc., illustrated in the following: