Changes the datetime stamp of one or more files or folders. Wildcards are supported.

FileSetTime YYYYMMDDHH24MISS, FilePattern, WhichTime, Mode



Type: String

If blank or omitted, it defaults to the current time. Otherwise, specify the time to use for the operation (see Remarks for the format). Years prior to 1601 are not supported.


Type: String

The name of a single file or folder, or a wildcard pattern such as C:\Temp\*.tmp. FilePattern is assumed to be in A_WorkingDir if an absolute path isn't specified.

If omitted, the current file of the innermost enclosing File-Loop will be used instead.


Type: String

If blank or omitted, it defaults to M (modification time). Otherwise, specify one of the following letters to set which timestamp should be changed:


Type: String

If blank or omitted, only files are operated upon and subdirectories are not recursed into. Otherwise, specify zero or more of the following letters:

Note: If FilePattern is a single folder rather than a wildcard pattern, it will always be operated upon regardless of this setting.

Error Handling

An Error is thrown if any files failed to be changed, with its Extra property set to the number of failures.

If files were found, A_LastError is set to 0 (zero) or the result of the operating system's GetLastError() function immediately after the last failure. Otherwise A_LastError contains an error code that might indicate why no files were found.


A file's last access time might not be as precise on FAT16 & FAT32 volumes as it is on NTFS volumes.

The elements of the YYYYMMDDHH24MISS format are:

Element Description
YYYY The 4-digit year
MM The 2-digit month (01-12)
DD The 2-digit day of the month (01-31)
HH24 The 2-digit hour in 24-hour format (00-23). For example, 09 is 9am and 21 is 9pm.
MI The 2-digit minutes (00-59)
SS The 2-digit seconds (00-59)

If only a partial string is given for YYYYMMDDHH24MISS (e.g. 200403), any remaining element that has been omitted will be supplied with the following default values:

The built-in variable A_Now contains the current local time in the above format. Similarly, A_NowUTC contains the current Coordinated Universal Time.

Note: Date-time values can be compared, added to, or subtracted from via DateAdd and DateDiff. Also, it is best to not use greater-than or less-than to compare times unless they are both the same string length. This is because they would be compared as numbers; for example, 20040201 is always numerically less (but chronologically greater) than 200401010533. So instead use DateDiff to find out whether the amount of time between them is positive or negative.

FileGetTime, FileGetAttrib, FileSetAttrib, FileGetSize, FileGetVersion, FormatTime, File-loop, DateAdd, DateDiff


Sets the modification time to the current time for all matching files.

FileSetTime "", "C:\temp\*.txt"

Sets the modification date (time will be midnight).

FileSetTime 20040122, "C:\My Documents\test.doc"

Sets the creation date. The time will be set to 4:55pm.

FileSetTime 200401221655, "C:\My Documents\test.doc", "C"

Changes the mod-date of all files that match a pattern. Any matching folders will also be changed due to the last parameter.

FileSetTime 20040122165500, "C:\Temp\*.*", "M", "DF"