I need to be able to extract Contacts from my Thunderbird Address Book based on the date/time they were last updated. I could easily write a program which will search a Thunderbird Exported .ldif file and select Contacts which were updated since a given date/time, but my problem is that I can't figure out how to parse Thunderbird's "modifytimestamp" field. As the example below shows, I updated a Contact (by typing raw unformatted text data into the Notes field in the Properties dialog) on 6/19/16 at 09:39:15... the nature of my update, in fact, was to type this date and time as unformatted text into the Notes field of the Contact, in order to test modifytimestamp. The resultant modifytimestamp was 1466354355. For the life of me, I can't figure out how to derive the actual date/time from that modifytimestamp. I did a few others and I can't figure out the "rule" that Thunderbird is using to construct the modifytimestamp from the actual date and time. Another approach (which might be much easier for me) would be to find and parse modifytimestamp (or its equivalent) in an exported .csv file, but when exporting to .csv it seems that neither "modifytimestamp" nor a decoded version of it is included as a column in the .csv file. And even if it were, I would still have the same parsing challenge if it was just the actual modifytimestamp. Your thoughts?? Thanks!! Joe Navarro