Cron expression generator for hangfire


I have a scenario that I need to schedule a report weekly as per the date and day are chosen from the UI.(Five field cron expression)

please help me on this below question.

if Weekly and it need to start from a particular date, how to mention the start date in that cron expression.


Current Date(14-OCT-2020)

ā€“> if the user scheduling a report today and it needs to be triggered every Monday and this also needs to start from (23-OCT-2020). how to create the cron expression before scheduling in hangfire?