AWS EC2 UTC timezone conversion off by a day with moment JS

Question

Yesterday I posted this question about MongoDB UTC record timestamp issues when using MomentJS :

MomentJS not converting date correctly

Blakes Seven's answer solved the issue locally, but when I deployed to AWS EC2, the problem reoccurred. Here are the steps I took to understand the issue:

• I verified the Elastic Beanstalk instance was using the correct zip from S3 bucket. So the code fix is definitely live.
• EC2 location: US East (N. Virginia)
• The request location to MongoDB for records is the same for the local and live
• Launch Time: October 21, 2015 at 4:51:31 PM UTC-4 (2684 hours) : I can't find the actual time zone config of my EC2, but this tells me it's UTC.

So my questions are:

• How can I verify that my EC2 is set to UTC time
• Is the server timezone even the issue? Somehow the dates aren't being read or parsed correctly

Answer 1

I have a simular issue. Everything was going fine with moment.locale('fr') but wen wrong on AWS EBS/EC2. I solved it by using moment-timezone and force to 'Europe/Paris': moment.tz('Europe/Paris')