07/02/22 06:19:36 roHxHVCh0
The FAT filesystem of DOS only has a timestamp granularity of two seconds;
Zip file records mimic this.
As a result, the timestamp granularity of files in a Zip archive is only two seconds.
URLﾘﾝｸ(en.wikipedia.org)
ここに書いてあった。zip の制限だって。
しかしよくこんなことに気付いたね。