RTC on the adafruit datalogger shield

The adafruit datalogger shield has a built in RTC. I have two questions:

1- Can the RTC be accessed by the arduino directly, or is it only usable by the shield itself? I think the answer is yes.

2- Can the auto-timestamp be turned off? I’m not sure that it even exists, I’m just going by

The included Real Time Clock timestamps all your data with the current time, so that you know precisely what happened when!

I do want to timestamp it, but I don’t care what time it actually gets stored. There will be a large amount of time between when the data is collected and when it gets logged.

Thanks!