Forum Discussion
File modified date missing
I use xnview to change exif file dates, I have a folder with a hundred or so jpgs, 20 of these don't have a file modified date, it's empty in file explorer and also in file properties. If I use xnview to change the dates manually they all change perfectly, but if I choose change the two file dates to the same as the exif date ( any exif date) it changes the 2 file dates ( Inc file modified) to 31/12/1969, this date appears nowhere in the file dates, so is a mystery But in all instances windows file explorer shows file date modified as empty, and also in file properties.
As a side note I thought I could change file dates in properties by right clicking and changing, but this is not possible, on any of my JPGs.
Really confused, as only 20 jpgs has this issue, the other files seem to be fine. I've created copies of these files and they behave the same.
1 Reply
The files could have been copied from different sources or downloaded from the web with missing or invalid metadata. The 31/12/1969 date (or similar) appears because of how the system interprets a zero or invalid timestamp — it’s a common default in some systems.
