# create directories
mkdir -p /tmp/test_day && cd $_ && mkdir -p today yesterday before_yesterday && cd -

# in linux change modification time
touch -d '-2 days' /tmp/test_day/before_yesterday
touch -d '-1 day' /tmp/test_day/yesterday
touch /tmp/test_day/today

# find directories with modification time older then 24 hours
find /tmp/test_day -mindepth 1 -mtime +0

# -and -a -or -o
find /tmp/test_day -mindepth 1 -mtime -4 -a -mtime +1