Seriously, someone who programmed that "glitch" needs to be fired, how simple is it to calculate a leap year or not?
if (year mod 4 is 0) and (year mod 100 is not 0) or (year mod 400 is 0)
then is_leap_year
else
not_leap_year
Not hard
Unicorns ARE real - They are just fat, grey and called Rhinos