Is cool.
D, H, M and S are the numbers of days, hours, minutes and seconds, so X is the number of seconds in a year. :smil:
Though you're forgetting that a year is slightly longer than 365 days (365 d 6 h 9 min 9.7676 s). So the absolute value for X is in fact = 31,536,000 + 21,600 + 540 + 9.7676 = 31,558,149.7676
The devil's hidden in the details, hehehhe.