Answer by leonbloy for When does `cron.daily` run?

From the man page:

 Cron also searches for /etc/anacrontab

/etc/anacrontab in my system (Fedora 12) :

1       5       cron.daily              nice run-parts /etc/cron.daily7       25      cron.weekly             nice run-parts /etc/cron.weekly@monthly 45     cron.monthly            nice run-parts /etc/cron.monthly

See also man anacrontab