There are many reminder settings available in Gmail. The default time for your reminder is 24 hours from the present. The default time is 48 hours. For example, if you want your email to appear on July 14th, it must be in the past. However, if you want a recurring time of 1 week, you must use the option "every week" instead. Once you have a recurring reminder, you should set up a custom option to specify a specific date.
See also - https://evokingminds.com/setting-up-gmail-reminders-in-simple-steps/
See also - https://evokingminds.com/setting-up-gmail-reminders-in-simple-steps/