find is an amazing command. With the proper manipulation it can be used to massage out the file data you need.
To find files modified in the last 24 hours is straight fowrard. Just look for files with a modified time of now() minus 1 day (24 hours):
find . -type f -mtime -1 -ls
But if you just want files modified today it’s a bit more involved:
touch -t `date +%m%d0000` /tmp/$$ find . -type f -newer /tmp/$$ -ls rm /tmp/$$
touch a file with the timestamp of 12am today. The file can have any name, but we just use the bash pid here. Then find files newer than that file. It will return files modified some time since 12am. Then remove the touched file.