Why doesn't crontab work properly?

Question

Task Schedulers

Of good!
Introductory:

[[email protected] ~]$ crontab -l
* 6,20 * * * sh /home/jive/jivepars.sh

[[email protected] ~]$ cat jivepars.sh
java -jar tehnosila-sync.jar -Dfile.encoding=UTF-8 --spring.config.location=app.properties -Xmx1024m -Xms256m >> logs/$(date +%F-%H)-javaparser.log

Instead of the standard run twice a day. This infection is launched every time at 6 am and 8 pm and in the process of work it is re-launched every second until it works. What adds up the server with giblets.
However, if you run it manually

[[email protected] ~]$ 
sh /home/jive/jivepars.sh

That script, as it should be, fulfills the entire process only once. From which it becomes clear that crowns are still being extorted. But where?, why? ..

Answer 1

* 6.20 * * * is every minute of the 6th and 20th hours.
0 6.20 * * * - this is at 6 h 0 min and 20 h 0 min - twice a day