Something like:
while(now.hour() == 16 && now.minute() == 19)
{
Buzz();
buttonState = digitalRead(button);
if(buttonState == 1)
break;
}//while
Something like:
while(now.hour() == 16 && now.minute() == 19)
{
Buzz();
buttonState = digitalRead(button);
if(buttonState == 1)
break;
}//while