title: Hangfire recurring job for Every first Monday of month
body: <p>I googled for help couldn't find help myself so asking a quick question on cron schedule with Hangfire.</p>
  
  <p>How to set cron expression if I want to execute hangfire recurring job every first monday of every month? </p>
  
  <p>The expression  1 9 * 1/1 1#1 does not work in hangfire (as it uses crontab syntax and 1#1 is throws exception.  </p>
  
  <p>I'm using CronGen from <a href="https://github.com/hsal/cronGen" rel="nofollow noreferrer">here</a> and modifying it to generate CronTab syntax valid for Hangfire.</p>