[delinka]

Why does the thing store the current time every 10 minutes? Seems like it needs your DOB, and whatever the current clock time is - and even a few minutes of drift isn't going to be a problem for an application like this. If it's ever connected to the tubes, it can adjust its clock from a time server.

[magnat]

Arduino (ATmega328) without additional boards does not have RTC nor any network connectivity. Using other microcontroller, such as ESP8266, one could fetch time from NTP, parse life expectancy tables from WWW, use GeoIP for checking which country you live in.