Little Known Facts About Rain for studying.
The period of darkness commencing at the conclusion of evening astronomical twilight in the event the sun is 18 degrees beneath the horizon, and ending at the start of early morning astronomical twilight.swaar, hewig بِتَثاقُل، بِصورَة ثقيلَه тежко pesadamente těžce schwer tungt; stærkt; voldsomt; stort; svært βαρ