Reading directory in lftp - Changed Date is not unambiguously

I am using lftp to read from an ftp server - When I read the current directory with ls -R, in the result for the date is not always the same:

-rwxr-xr-x   1 30020    30021     1213487 Mar 10  2024 A2024031004000171.zip
-rwxr-xr-x   1 30020    30021     1147352 Apr 21  2024 A2024042104000172.zip
-rwxr-xr-x   1 30020    30021     1146095 May 12  2024 A2024051204000173.zip
-rwxr-xr-x   1 30020    30021     1148535 Jun  9 04:29 A2024060904000174.zip
-rwxr-xr-x   1 30020    30021     1155371 Jul 14 04:27 A2024071404000175.zip
-rwxr-xr-x   1 30020    30021     1150829 Aug 11 04:23 A2024081104000176.zip
-rwxr-xr-x   1 30020    30021     1151742 Sep  8 05:09 A2024090804000177.zip
-rwxr-xr-x   1 30020    30021     1154313 Oct 13 04:24 A2024101304000178.zip
-rwxr-xr-x   1 30020    30021     1153442 Nov 10 04:25 A2024111004000179.zip
-rwxr-xr-x   1 30020    30021     1203416 Jan 14  2024 A2024011404000169.zip
-rwxr-xr-x   1 30020    30021     1214387 Feb 11  2024 A2024021104000170.zip

Sometimes it states the hour in 8th position - sometimes the year. Does anybody know why this is happening? I need to check wether or not a file was changed, and also I need the specific date - So I need both, time and year.