Maybe a timezone confusion?

[romain-li]

My notifier service can't get the newest discussion digest.

My server is in CST timezone, and the notifier service call notifications API with the dt_format = '%Y-%m-%d %H:%M:%S%z' format, it's always like 2017-03-02 15:55:12 for the UTC time.
But in api/notifications.rb it converts time with to_time, this function use local timezone by default, so I think the time without UTC offset will be converts to 2017-03-02 07:55:12 +0000.

I have try to change the two function in api/notifications.rb to to_time(:utc), for now, the API works.
But I'm not very familiar with ruby on rails, so I'm not sure it's a correct solution.