Android or Samsung photos on the wrong date after copying?

You copied your phone's camera folder to a computer, a new phone or a photo app, and some photos or videos landed on the day you copied them.

Which photos are affected

Photos straight from the camera have their "date taken" inside, so copying them is fine, and most of yours are probably already right. The ones that go wrong are copies that lost it along the way: some edited or exported copies, photos resaved by another app, compressed backups, and videos whose date was reset. Without a date inside, photo apps use the file date, which is the day of the copy.

The date is in the file name

20240105_143210.jpg          ← Samsung Galaxy camera
IMG_20240105_143210.jpg      ← many other Android cameras
VID_20240105_143210.mp4      ← their videos
PXL_20240105_063210123.jpg   ← Google Pixel

Samsung and IMG_/VID_ names use the phone's local time.

Pixel names are different: they're in UTC, not your local time. The photo above was taken at 6:32 am UTC, which is 2:32 pm in Perth. Tools that read the name as local time put Pixel photos hours out, and sometimes on the wrong day. The Photo Date Fixer converts them to the time zone you choose.

How to fix it (free)

Copy the camera folder (DCIM/Camera) to a computer.
Open the Photo Date Fixer in Chrome or Edge and choose that folder. Nothing is uploaded.
Check the time zone, then pick an empty folder. Only files without a date inside are fixed and saved there, with the same names.
Import the fixed copies into your photo app, replacing the undated ones.

Photos that still have their date inside are skipped and not copied, so the output folder only holds the ones that were fixed.

Fix my Android photos: it's free