To find a relative date, 90 days in the past from June 6th, you can use manual calculation methods. First, start by setting the reference date, which is June 6th in this case. Then, subtract 90 days from this date. To do this manually, you can break it down by months, weeks, and days to accurately reach the desired date.

For instance, start by subtracting 30 days from June 6th, which would bring you to May 7th. Then, subtract another 30 days to reach April 7th. Finally, subtract the remaining 30 days to arrive at March 8th, which is the date that is 90 days in the past from June 6th.

By following this manual calculation method, you can precisely determine a relative date that is a specific number of days in the past from a given reference date. This approach allows for a detailed breakdown of the calculation process, making it easier to track each step and ensure accuracy in finding the desired date.