Auto Save all entries - use month end cron

Hello All,
Any help would be appreciated.

What i want is to save all the doctype entries automatically at the end of the month by python crone file.
any suggestions?

Best Regards,

You can use scheduler_events

thanks @OmarJaber for reply.
Actually i am new here so could not understand your solution,can you please describe it.
main motive is to save all doctype entries automatically.