I need some job to be run on schedule every x hours. I see that official documentation claims that none special characters are allowed for hours portion of CRON expression, however, when I try on sandbox to execute the following code
System.schedule('Run Batch every five hours', '0 0 2/5 * * ?', new BatchScheduler('Batch') );
I don't receive any error or exception and it seems to be scheduling it every 5 hours. Since this is not documented I am not sure if I could rely on this to run on production.
Can I rely upon this undocumented feature to use in production code?