datemodified of file cataloged in fh

I have used cattool.exe to convert an fh file into xml format. The xml file contains a lot of xml nodes, one of them looks like follows:

<ET ... MT=1412164908" CT=1412164908" AT=1412164908" SZ="4065" FP="WSS_Content\/\MyDocuments\myfile.docx" OST="0" />

I know that FP is "complete file path", what about MT, AT, and CT. Are these tags related to modification time, access time, creation time?

how can I convert MT=1412164908" from integer value into datetime?