For instance, the filename
crefl1_143.A2013015200500-2013015201000.2km.jpgsays the image was taken off Terra in 2013 on Julian Day 015 at 20:05 to 20:10 UT. It's the 2 km resolution file. To look at it in higher resolution, set your browser to
BTW, days are numbered sequentially from 1 to 365 in a Julian calendar. It's much easier than keeping track of months and dates in software. January is easy because the Julian day is just the date. But, for subsequent months, this Julian day calendar comes in handy.
* NASA downloads and processes satellite data in chunks they call granules. Whenever you shoot a continuous movie, you have to chunk it down somehow, and granule is a good, descriptive name.