ShauryaSaxena if you have setup automatic store scheduling and today(Wednesday) if you need to close the store at 6pm, you will need to edit the store scheduling time for Wednesday and make the close time as 6pm.
Because of you close manually, it will turn off the automatic scheduling.
Why does it turn off automatic scheduling?
Because if we donot turn it off, the store will reopen at 6:01pm today on Wednesday and remain open till 10pm as the close time is 10pm.