Hi GoForSmoke,
thank you for fast reply. However I'm still missing something. Pls have a look at my modified code
#include <time.h> // die lib einbinden
tm myYear;
void setup() {
...
Serial.println(myYear.tm_year);
No compiler errors anymore - great! However the printed result is 0 and not as expected.
Thank you for helping a newbee!