find -mtime files older than 1 hour

Question

I have this command that I run every 24 hours currently.

find /var/www/html/audio -daystart -maxdepth 1 -mtime +1 -type f -name "*.mp3" -exec rm -f {} \;

I would like to run it every 1 hour and delete files that are older than 1 hour. Is this correct:

find /var/www/html/audio -daystart -maxdepth 1 -mtime **+0.04** -type f -name "*.mp3" -exec rm -f {} \;

I am not sure of my use of the decimal number??

Thanks for any corrections.

EDIT

OR could I just use -mmin 60? Is this correct?

EDIT2

I tried your test, good thing you suggested it. I got an empty result. I want all files OLDER than 60mins to be deleted! How can I do this?? Does my command actually do this?

Answer 1

What about -mmin?

find /var/www/html/audio -daystart -maxdepth 1 -mmin +59 -type f -name "*.mp3" \
    -exec rm -f {} \;

From man find:

-mmin n
        File's data was last modified n minutes ago.

Also, make sure to test this first!

... -exec echo rm -f '{}' \;
          ^^^^ Add the 'echo' so you just see the commands that are going to get
               run instead of actual trying them first.