List - Mod Date

The modification date of the entry.

ShrinkIt archives use the IIgs "DateTime" format, which includes year/month/day and hours/minutes/seconds.

ProDOS disks and Binary II archives use the ProDOS date format, which has year/month/day and hours/minutes but not seconds.

Pascal disks use the Pascal date format, which has year/month/day but no time.

DOS 3.3, CP/M, and RDOS do not store dates.

When no date is available, "[no date]" is shown.  This is expected on disk images and archives created on systems without clocks.  If the stored date is invalid (e.g. February 31st), it will be shown as "<invalid>".