Task: Due to the stormy conditions outside, the time has changed, so the time will be planned later. Therefore, I need to change the reminder date for the "swimming competitions" to October 4 in the To Do Reminders app.
Steps:
Click on the swimming competition reminder. 
Click on the edit option.
Click on the date section.
select the date as 4.
Click on the ok button.
Click on the save button.