Apps (like Snapchat, Instagram, or system galleries) sometimes fail to record a date when saving an image, causing it to default to the "Epoch" date.
You can manually correct the date so the photo sorts correctly in your gallery. Right-click the file and select Properties . Go to the Details tab. 1969-12-31 18.00.00_4.jpg
Click the next to the date and time to select the actual day it was taken. On Apple Photos (iPhone/Mac): Open the photo and tap the "i" button . Tap Adjust next to the date/time to change it. Apps (like Snapchat
Find the field and click it to enter the correct date and time. On Google Photos: Open the photo and swipe up (or click the "i" info icon ). 1969-12-31 18.00.00_4.jpg