Add 11 hours to a directory of JPGs

add_11.py

# Back up your photos before running this!
import pyexiv2
import datetime
import glob

# Directory relative to where the script is -> change it to whatever you want
target_folder = "test"

hours_to_add = datetime.timedelta(hours=11)
time_keys = ["Exif.Image.DateTime", "Exif.Photo.DateTimeOriginal", "Exif.Photo.DateTimeDigitized"]

for file in glob.glob(target_folder + "/*.jpg"):
  metadata = pyexiv2.ImageMetadata(file)

  metadata.read()

  for key in time_keys:
    metadata[key] = metadata[key].value + hours_to_add

  metadata.write()

print "Done processing all JPGs in " + target_folder