Hi Frank

Thanks for the link!

However my problem is still open.

From the given link
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0 0 1-7 * 5 /some/script
You might hope that will run /some/script during the first minute of the first Friday of the month. Unfortunately, it will run the script on each day of the first week of the month and on every Friday.
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In my case I have to schedule the job on every Monday and every alternate Thursday. If the write the below code

0 0 1-7 * 1,4 <path to script>

Then above will run every Monday and Thursday, however I have to skip one week and then run the script in case of Thursday.

Please help !

Regards