$ du -sb * |awk '{cmd="stat -c %z "$2" |cut -d\" \" -f1";cmd |getline z;close(cmd);print z" "$1}' |awk '{sum[$1]+=$2}END{for(i in sum)print i,sum[i]}' |sort |numfmt --to=iec --field 2 --padding=10
2022-01-21 13M
2022-11-02 17G
2022-12-13 4,7G
2023-01-15 388M
2023-03-06 1,6G
2023-04-01 1,6G
2023-04-03 2,2G
2023-04-04 13G
2023-04-11 7,6G