Since OS X has its own task scheduler, launchd, it appears that crontab is a relic.
Hence I'm wondering: Will a cron job (crontab) wake OS X up from sleep?
In case it matters, I'm on Yosemite 10.10.5.
Why I'm not switching to launchd? Laziness:
> man launchctl | wc 463 2975 27730 > man crontab | wc 72 433 3577
The man page is a lot larger, and crontab does everything I need.