can you please share some sample (ui or more detail) to understand the requirement better.

for filtering date there is discussion you can check that

https://www.outsystems.com/forums/discussion/93861/outsystems-data-grid-filter-a-datetime-column-with-date-filter/

if you are looking to convert date to human readable format than you can use 

https://www.outsystems.com/forge/component-overview/21024/humanizerdemo-o11

https://www.outsystems.com/forge/component-overview/4314/humanizer-o11

More specifically, when I filter a Date column by a condition:

say, between Feb 24th (4 days ago) and (today) Feb 28th)

And then I save that filter; I want the filter to automatically update based on when "today" is:

So if Today is March 7th, the filter will automatically be updated to between March 3rth and March 7th.
So, in the greater-than field, I would put "4 days ago," and in the less-than field, i would put "Today" Allowing the dates on the filter to be dynamic based on when the user is accessing the page.

Hi @Steven Stein 

Can you try this approach:

1. You can use two local variables. FromDate with Default value as AddDays(CurrDate(), -4) and ToDate with Default value as CurrDate(). This will automatically calculate a rolling 5-day window.
2. In the filter property of your Aggregate, add:  YourEntity.DateColumn >= FromDate and YourEntity.DateColumn <= ToDate
3. If your Data Grid is displaying data from that Aggregate, it will now automatically show only the records within the rolling window.