Also see definition of "Sunrising" in Word Study
Sunrising
SUNRISING [isbe]
SUNRISING - sun'-riz-ing: A frequent designationin the Old Testament for the East (Nu 21:11; Dt 4:41,47; Josh 1:15, etc.). In Rev 7:2, the Revised Version (British and American) has "sunrising" for the King James Version "east."
Also see definition of "Sunrising" in Word Study