Column with date and time format

Hi, it's me again :D

I wonder if in Calibre it's possible to set a custom column with date and time. It's because when I add new books, of course, the modify column show me the date, however, if I make a full modification of data (whatever it was), all the books show the same date, of course, because all books change some information, even if the data change or not.

I notice that Calibre knows which books are recently modified, because when I sort by modified, so the time looks to me usefull. It's possible to create a custom column with this criteria?

Again, sorry my grammar if I make mistakes
Best regards from Lima, Perú
Blessings and have a nice sunday