I have near 1000 cron jobs:
All working good when set "Everyday". When set run only N days (2. day only), every cron task run after 2 day.
Have 2 big xml feed with 20000 products each, need it run alternately (1. on one day, 2. on second day), but always run at same day.
Try delete the second and ad a 1 day later but not help. Try set on another VPS another day, not help. How this work then? Always run all feed at same day...