Recurring Job every specific days of week

Hi all,
I’m trying to set a recurring job that start in specific days of week, at specific time.

My job should start every TUE-THU-SAT, for every weeks of the year (every years), at 18:15pm. So, I have written this “cron”:

RecurringJob.AddOrUpdate(“updJob”, () => newJob.MyUpdateJob(), “15 18 * * 2,4,6”);

With this setting nothing works!
Could someone help me to understand where the problem is?

Thanks a lot.