We find a number of terms referring to when morning starts and then perhaps a similar term used to refer to the time of shachris. Alos HaShachar (עלות השחר) Ayeles HaShachar (אילת השחר) and Shacharis ...
Possible Duplicate: Hechi Kedushah anytime? Do any posekim say that even in shacharit, one can do the "hoiche kedushah" if the minyan-goers really need to go to work, or are in a rush for ...
What are the halachic issues/opinions/options regarding starting work early, i.e. before one is allowed or practically able to daven Shachris?