I have just tested the latest (and probably the last) firmware for my biNixie clock. It lacked a way to set hours/minutes, that has been implemented with two push buttons and the useful INPUT_PULLUP feature of AVR microcontrollers (the pin is set as input and an internal pull-up resistor is toggled in, so you save external components).
I am now able to understand how precise the RTC module is, so I will decide whether those buttons can be hidden into the case or they need an easier access.
Going happie (or nixpy?) to sleep.