I can't find any way to calculate days in month using Zeller's Congruence °_° That's seems to calculate only the day of the month (and it's awesome!). Even the

I can't find any way to calculate days in month using Zeller's Congruence °_° That's seems to calculate only the day of the month (and it's awesome!). Even the Java program use a fixed array to output the days in month! XD