mongodb和nodejs中的不同日期

Question

Mongo's Date is differ from system and nodeJS date settings. How can I fix that?

mongo:

> new Date()
ISODate("2014-06-23T08:53:45.585Z")
> exit
bye

Debian system:

root@vm85820:/var/node/mrandom.com# date

Mon Jun 23 12:54:14 MSK 2014

node:

root@vm85820:/var/node/mrandom.com# node
> new Date()
Mon Jun 23 2014 12:54:24 GMT+0400 (MSK)

Answer 1

They are not different. The MongoDB time is in UTC, the other one in MSK timezone (+4 hours).

Answer 2

The dates are the same, but MongoDB shell displays the time in UTC format (using ISODate wrapper). In MongoDB shell, when you use new Date() it will create a new Date object using ISODate wrapper, but if you use just Date() it will return current date as string.

> Date()
Mon Jun 23 2014 11:08:05 GMT+0200 (CEST)

You can also convert the Date object to string using toTimeString method:

> new Date().toTimeString()
11:08:05 GMT+0200 (CEST)

Internally, MongoDB stores Date objects as a 64 bit integers that represent the number of milliseconds since the Unix epoch.