Have sharp atomic clock, but I forgot how to use it! Please instruct me how to set the time and date. My e-mail is

Product Demonstration for Sharp Clock Model SPC585

Sharp Atomic Clock – Never Needs Setting, Jumbo 3” Easy-Read Display, Indoor & Outdoor Temperature with Wireless Sensor, Large Digital Wall or Desk Clock, Battery Operated, Auto Atomic Time Sync

How do I change the time zone on Sharp model SPC900 atomic clock?

Sharp Digital Alarm Clock - Ascending Alarm Begins Faintly and Grows Increasing Louder, Gentle Wake Up Experience, Dual Alarm - Battery Back-up, Easy to Use with Simple Operation (Brushed Silver)

Sharp Twin Bell Alarm Clock - Loud Alarm - Great for Heavy Sleepers - Battery Operated Quartz Analog Clock (Midnight Black)

Sharp Home LED Digital Alarm Clock – Swivel Base - Outlet Powered, Simple Operation, Alarm, Snooze, Brightness Dimmer, Big Red Digit Display, Gun Metal Grey Case