http://www.meetup.com/meetup_api/docs/2/event/
Here's the Meetup API's definition of time:
Event start time in milliseconds since the epoch, or relative to the current time in the d/w/m format.
Here's the type of value I see returned in the JSON:
"time": 1382742000000,
Any advice about how to convert it into something recognizable?
You can construct a date object like this
var date = new Date(milliseconds);
And then you could apply any format you want using Date
properties