How can you remove the date stamp from the canon IXUS 8215?

Try to use menu and settings. Also, date stamp can be used only in very low resolution images, change your image resolution and quality back to this large/superfine setting. And you can find the information related to date stamp in user guides. Look for them here Canon Camera user guides and owners manual

There is no way you can delete the date stamp from the photos you have taken.
For future photos you can either correct the date or disable insertion of date stamp.

Press MENU button.
Use Function Button arrows to bring up the camera icon at top of screen.
Use Function Button up or down arrows to get to Date Stamp heading on screen.
Press right arrow to get Date or Date and Time.
Select OFF
Press Menu
Done

The date stamp on the existing images can't be moved by the camera You can move them on computer by some software as PS

The date stamp only works in Postcard mode. Press Func/set, scroll down to the bottom, then across to the mountain with clock icon. "Postcard" will appear in the selection. Press Func/set.

Now press Menu, scroll down to Date Stamp and across to set date or date and time, then press menu again.

On my Ixus 70, I can only "embed" the date on pictures when "Postcard Mode" is selected. Press "Func/Set", go down to the bottom icon on the left (sets picture size) then go right to "Postcard" (looks like mountains, will say Postcard when selected) then press Func/set button again. Now press "Menu", scroll down to "Date stamp" and set it to "Date" and press "Menu" button again.

Once embedded, the date cannot be removed later.

Image size (L, M1, M2, M3, S, Postcard) must be set to Postcard. Then make sure that on the Record menu Date Stamp is set to Date or Date/Time.

Hi,
To set date stamp follow the instruction:-
1) Press MENU button. 2) Select REC Menu. 3) Use the up and down buttons to Select Date Stamp. 4) Toggle to the desired opetion OFF or ON.
Note:- Ensure the date & time is set before using date stamp function.

Good Luck

:
The date and time can be included on the pictures taken only with the camera in postcard mode. You must also activate the date stamp option in the menu.
To set the camera into postcard mode, press the [Func.] button on the camera, then use the [arrow down] key to go down to the last option in the menu, and there you can choose the [Postcard mode]. Press [Func.] again to exit the function menu.
To set the date and time stamp, press the [Menu] button and then use the [arrow down] button to go to the [Date stamp] option in the menu. You can set this to "Date" or "Date & Time". Press the [Menu] button again to exit the menu.
Be aware that if you take pictures with this option enabled, the Date and Time cannot be removed from the pictures at a further time. It will permanently appear on the picture.

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The date and time (and a lot more) are stored with every picture in its EXIF metadata. Any photo viewing/editing program should be able to display this data. To print this data, please consult the documentation for whatever program you're using to print your pictures. Depending on the program and printer you may print the date on the image, in the margins, or on the back.