http://youtu.be/zymtnFY4H9AI am using the ArduiNIX and an Arduino YUN (It has a network co-processor) and with that I am able to get network time. The Nixie clock self sets itself and also adjusts for DST/PST automatically.
I separated out the anodes for the two tubes so I could shut off a tube in the case where the leading digit of the hour is Zero.
I added floor lighting using 2n2222 transistors and blue LEDs. Controllable as well by the software.
The display sends out HOURS -> MINUTES -> Pause -> MONTH -> DAY -> YEAR -> Pause and repeat.
The code will turn off the display at night.
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Here is the code for the Arduino YUN, enjoy
Code attached... Enjoy