Converting a mongo stored date back into milliseconds since Unix epoch when loaded?

Question

I am using Mongoose & Node.js for my webserver.

As a part of one of my document schemas, I have a \'timestamp\' field. The line for it in the schema is:

Answer 1

This works fine for me

db.eurusd.ticks.findOne({_id:ObjectId("518636777055000000000000")}).t.getTime()

returns time in miliseconds, where returned document has structure

{
 "_id" : ObjectId("518636777055000000000000"),
 "t" : ISODate("2013-05-05T10:37:43Z"), // date data type
 "ask" : "Joe",
 "bid" : 33
}