Using GNU Findutils one can search for all files modified in the last N days.

find ~ -name '*.txt' -type f -mtime -60

-name "*.txt"

You need to enclose in quotes " " to avoid the shell expanding the asterisk into a giant list of files. This parameter is optional

-type f

save time by searching only files, not directories (especially helpful the other way around where you want only directories)

-mtime -60

searches for files modified within the last 60 days (not older files)