Altering Shooting Time/Date value in RAW file

OK....I made a major goof. ; I took over 300 pictures of Kylee's birth and had the camera still set to China Timezone. ; Does anyone know of a way that I can batch alter these date/times in the file so I can have an accurate chronology?

I don't own any post-processing software so I'm looking for the possible existence of a freeware tool someone uses or has used that they trust

 

I'm thinking EXIFTool....

http://www.sno.phy.queensu.ca/~phil/exiftool/


There are plenty of programs that will allow you to alter the data but many won't work on the RAW file or actually just change a sidecar file.

 

Thanks Roger!

I'll give it a look.

 

I second the vote for EXIFTool. ; And since you're running Windows, pick up EXIFToolGUI to use as a front-end.