My solution. Ah a trick question!
ATTEMPTING THIS CHALLENGE? STOP... READ THIS FIRST
The Input 'Time_Now' is different to the output answer 'Time_Now' by 41 seconds.
INPUT TIME_NOW: 2014-07-14 08:24:35
OUTPUT TIME_NOW: 2014-07-14 08:25:16
I'd like to say this didn't trip me up but it did.
I solved this quickly using modulo and felt like a genius... Checked the answer doubted myself.
Did it again in a much more complicated way, got the same answer... at this point I should have smelled a fish however I... doubted myself for a second time.
Spent too long working through the logic and wondering if time and space were at fault or I had gone mad before noticing the difference in the answer.
Cursed, waved my fist in the air repeatedly and vowed to check such things in future.
Forum Mods: If you are aware of a problem with a challenge could you please change the start file? Or at least put a warning in the Original Post.
Several people have reported this over the past three years and it's still tripping people up. Hopefully this isn't a thing in future challenges?