Deep within a hidden location, one that's much worse than the City of Shadows....

"Is it ready Sister?" a shadowy figure dramatically whispered.
"Not yet Brother. The machine still needs another 4 months. And then we still have to put the programming in," the other figure whispered back, vaguely annoyed at how pushy he was being.
"Why so long? This needs to be done. Time is running out. Just look up to see that," the first shadowy figured exasperatedly questioned. 
"This process, Brother, has never been done before. Especially since no one really understands the devices. With the creators notes and books destroyed we have to go off of guesses," The second shadowy figure was getting kind of insulted, did he think she was incompetent.
"Fair point Sister, but still. This world may not have 5 months, and 1 month is not a reasonable margin, there would be less than that for a margin of error," HE was solidly a fine details kind of guy.
"Doing it faster would have more deaths ,Brother. While everyone will eventually die, we don't want it to happen to obviously," She on the other hand had SOME care of the common sheep.
"Never mind the common populace ,Sister.  We finish this faster, those people don't matter in the long run," he would not care less about them.
"As you wish, Brother.  See the old moon." the second shadowy figure began to leave to speed up the creation, bow differently to the first.
"And feel the new sun rise," the first shadowy figure almost appeared to smirk before vanishing.