Why the date makes proof persuasive
Dates matter a lot, because much of a tenant case depends on showing when a problem existed and when the landlord knew about it. Being able to establish when your photos and videos were taken makes them far more persuasive.
Most phones and cameras automatically record the date and other information in the original image or video file, even if a visible timestamp does not appear on the picture. This is one big reason to keep the original files rather than only screenshots or texted copies, which can strip that information.
You can also strengthen the record by referencing your photos and videos in dated communications — for example, emailing them to your landlord or to yourself, which creates a dated trail. Some people also photograph a dated newspaper or phone screen alongside the condition, though keeping originals is usually enough.
The goal is simply to be able to show, credibly, when the condition was documented. If you are unsure whether your photos and videos are properly preserving their dates, a free, confidential review can help you understand how to keep your evidence reliable.
This is general information about California tenant rights, not legal advice. Every situation is different.