[rndgermandude]

Exif itself defines three main times: DateTime, DateTimeOriginal, DateTimeDigitized. To add insult to injury, each has an additional SubsecTime*

Then you have in the GPS tags: GPSTimeStamp, GPSDateStamp

And those are just the common tags...

Next question is, what format do these tags use. DateTime, while it's supposed to be "YYYY:MM:DD HH:MM:SS", is generally a free-for-all in practice when it comes to the order of the date components, the format of the components, or what separator to use.

I've seen software write DateTimes e.g. like "1-12-23/1:13pm" instead of "2013:01:12 13:13:00". Whether it was actually M-DD-YY or D-MM-YY, etc in this case is more of guesswork when all the values are below 12 :P

And if I remember correctly there was one piece of software which wrote UTF-16-BE strings instead of the mandated ASCII.