Date observation question

I have been making observations this month and when I look back it has them all listed under one date. For example, this past week I have gone out and made multiple observations and they all have the date 12/1/2020. I was wondering if anyone else had experience with this and knew how to fix it.
Thanks!

I see 8 observations on that date, but there’s no full EXIF on photos from the date, were they done by smartphone or camera? May it be an error in camera settings or maybe in file name?

Welcome to the Forum!
In general, if you want to report a possible error, it helps a lot to include as many specific details as possible.
I agree with Melodi, it is very likely that the error was caused by missing metadata in the photos.