Simple solution with bash script,
just start this script in every folder:
#/bin/bash
#starting with 1* because all filenames starts with 1
for file in 1*;
do
echo "Processing $file.."
# getting timestamp from filename, first 10 characters
tstamp=$(echo "${file}" | cut -c1-10)
# set timestamp to file
touch -d @"$tstamp" "$file"
done