Year
In astronomy, the Julian year is a unit of time; it is defined as 365.25 days of exactly 86,400 seconds (SI base unit), totalling exactly 31,557,600 seconds in the Julian astronomical year.
Cosmological decade
When CÐ is measured in log( seconds/Ð ), "CÐ" 1 begins at 10 seconds and lasts 90 seconds (until 100 seconds after Time Zero). "CÐ" 100, the 100th cosmological decade, lasts from 10 to 10 seconds after Time Zero. CÐ formula_1 is Time Zero.