How to access start and end time of the dashboard filter(of type date_time) in view file

[abhi-kakadiya-7]

I have one field of type timestamp in the database and have created a filter in the dashboard on that field.

When a user selects the filter, I want to access that filter's value (StartTime and EndTime) and want to pass them as query parameters in the link URL.

I am able to access the filter value in the view file but I am getting strings like "is in the last 1 month" or "is on the day 2023/08/07". Is there any way that I can get start and end dates for every type of selection or any way that I can process these string values to extract dates?