: Hours.Minutes.Seconds. This indicates a very early morning shot—likely a sunrise, a commute, or an early morning indoor scene.
: Year-Month-Day format ensures files remain in chronological order when sorted alphabetically. 2020-02-13 06.35.30.jpg
The filename follows a standard digital naming convention, typically generated by smartphones (like iPhones or Samsung devices) or digital cameras. This format indicates that the image was captured on February 13, 2020, at 6:35:30 AM . : Hours