fbconnect.expiration

I’ve been researching this for a while, and I can’t seem to find more detailed information about the fbconnect event’s expiration field.  The corona docs don’t seem very descriptive.  Sure, it’s a number that corresponds to the date or time of expiration, but is this actually the epoch time from 1970?  

Is it in seconds, milliseconds, or what?  

My reason for asking is that I want to check, prior to a facebook request, whether this expiration time has already passed.  If it has, I’ll go through the login process again, to generate a valid access token to use.

From the looks of it, it seems that seconds would be the most appropriate.  I’m just concerned, because this means that the access token will not expire for another 58 days, which seems waaaaaaaay too long for an access token to be valid to me.  

Regarding the docs, if any Corona staff would be so kind as to update the Facebook section, it would be greatly appreciated to avoid future confusion :slight_smile: