DirDate

Modify file or folder create/modify/access dates from the command line. It can change dates using either a reference file or a series of YEAR, MONTH, DAY, HOUR, MIN, SEC, MSEC commands. It can handle read-only files.

Features: DirDate is a command line tool. It can easily be automated to change folder and file last modification date, creation date or last access date. You can use a reference file or a set of commands to change these times. With the reference file approach, the date and time in the file is used to update the time stamp on the target file. The set of commands to modify the time stamp include year, month, day, hour, min, sec and msec commands. You can use the preview to confirm that the files have actually been modified.

It is possible to set the time down to increments of 0.1 microseconds. It is possible to modify the time stamp up or down by amounts you need to in terms of the increment step.

Overall: A nice tool to tweak the time stamp on files. Though, it is not clear how so fine a time refinement is useful.

DirDate is a command line tool that can easily be automated to
change folder and file last modification date, creation date or last
access dates. It can use a reference file (where you 'lift' the date
from an existing file), the current date/time or a series of YEAR=,
MONTH=, DAY=, HOUR=, MIN=, SEC= and MSEC= commands.
EXIF support - set file create and modified dates to EXIF camera
Date Taken dates stored in your JPG, PSD or TIF photo files, with
easy DST or time zone adjustment.
You can also set modified dates to create dates, or create dates to
modified dates minus one hour etc.
It can process files in subfolders, handles read-only files and it
has a preview mode so that you can see which files will be modified.
-DIRFIX mode can intelligently set folder dates after a backup/
restore or copy has reset all folder creation dates.
-FILEFIX mode fixes modified dates that are earlier than create dates.
-REPORT mode saves dates from one folder and then applies them to a
new folder. This is extremely handy for saving folder creation dates
from an old computer when you copy photos, documents etc across to
a new computer, as the folder creation date is NEVER preserved by
file copying software.
New! Unicode filenames are supported.
You can set file date and times right down to the 0.1 microseconds
(100 nanosecond increments), or even tweak existing times up and down.