How to add text (Data Taken) with H - n hours

[urubu]

I red in this moment is not possible to edit EXIF, but is possible to set the format time for example with n hours less than stored time? (Some like <H-4:M:S>). Thanks four your response.

[xnview]

I red in this moment is not possible to edit EXIF, but is possible to set the format time for example with n hours less than stored time? (Some like <H-4:M:S>). Thanks four your response.

Currently not possible, but i think it would be a good enhancement

[helmut]

I red in this moment is not possible to edit EXIF, but is possible to set the format time for example with n hours less than stored time? (Some like <H-4:M:S>). Thanks four your response.

In XnView 1.82 you will be able to set a file's timestamp to the EXIF date and add/subtract some hours at the same time. But as Pierre has pointed out, changiing the EXIF date / time itself is not supported in XnView, yet.