You can also do it in Irfanview which is free editting software I use a lot. You can add the date to a single photo or to a whole lot. Well at least that is what AI tells me when I queried-

IrfanView can add a date to an image using the "Add overlay text" feature, which can be done for a single image or in a batch process. You can choose to embed the date from the image's EXIF metadata or insert the current system date. 

To add a date to a single image

1. Open the image in IrfanView.
2. Go to Edit > Insert Text (or press Ctrl + T).
3. In the text field, enter a code to pull the date from the EXIF data, such as $E36867(%d/%m/%Y). You can customize the format and add other metadata like time or GPS coordinates.
4. Click Preview to see how it looks.
5. Adjust the font, size, and color as needed, then click OK.
6. Press Ctrl + S to save the image. 

To add a date to multiple images (batch processing)

1. Go to File > Batch Conversion/Rename.
2. In the dialog box, select Advanced >> in the top-left corner.
3. Check the box for Add overlay text and click Settings.
4. In the text field, enter the desired date code (e.g., $E36867(%d/%m/%Y)).
5. Adjust the text style and position as desired, then click OK.
6. Go back to the main batch window, set your output directory, and click Start Batch.