How or where do I find the date of an NAIP orthophoto, specifically a California NAIP 2016? I need to know when an image was created.
If you downloaded a NAIP county mosaic from USDA's Geospatial Data Gateway, it came with a polygon shapefile of the source image extents. The image date is an attribute of each polygon. Otherwise, you should ask the person who provided the data to you.