Current time on my system according to date – “Wed Dec 18 07:03:12”.

stat file.deb
  File: file.deb
  Size: 80961912    Blocks: 158136     IO Block: 4096   regular file
Device: 8,1 Inode: 7603809     Links: 1
Access: (0644/-rw-r--r--)  Uid: (  999/ certbot)   Gid: (  999/systemd-journal)
Access: 2024-12-18 04:10:31.568599724 
Modify: 2024-12-16 20:40:38.297812712 
Change: 2024-12-16 20:40:38.297812712 
 Birth: 2024-12-16 20:40:37.337802744 

so it is changed at 2024-12-16 20:40:38,
more then 24 hours ago, but

find . -name file.deb -type f -ctime +1 -print

do not print file.deb.
If I remove -ctime +1 it prints file.pdf.

But now 18 Dec, while it was changed 16 Dec, at least 24 hours condition should match,
why “gnu find” can not find file ?

I use debian 12 and find from findutils.