Multizone Clock

I work in the transportation industry. In the operations department at work they have three clocks on the wall showing the time in three different zones. I just had the thought that I could replace these with a 6 zone digital clock.
Since the zones would have to be programmable and not every zone uses daylight savings I would end up with each zone on a separate microprocessor.
For my purposes I would have the unit with a label showing the target city for each zone.
So my initial thoughts would have hardware consisting of:

  • 6 x Raspberry Pi
  • 1 x power supply (5V @ 6A / 12v)
  • 1 x 8 port 10/100 Ethernet hub
  • 6 x Quad Alphanumeric Displays (0.5 inch)
  • 6 x 7-segment displays (0.5 inch)
  • 1 x AC power adapter socket with switch
  • 1 x 8 inch Ethernet extension cable
  • mounting hardware, cables, display box

By using separate Pis for each zone, the OS can supply all the rules for the selected time zone. Each Pi would need to sync to an NTP server for the current time and show the time and zone on the LED displays. Each Pi would run SSH and/or a simple web page for configuration.

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