We must aware of those tropical zones our worlds are in the process of discovering and therefore, our worlds are in a perfect change motion for the best benefit of all human and nature.

1. Scedule2: Optimum Days of the Tropical zones by Fassil T Source: Sources different years Ethiopia’s Calendar At south tropics At north tropics Sene 14 5 Second equinox Second equinox Megabit 12 4 At north tropics At south tropics Thahisas 12 3 First equinox First equinox Meskaram 13 2 At south tropics At north tropics End of Sene 14 1 minimum maximum Optimum day hours Name of optimum days of the year No