Accepted answer

Since the timerange (of 3 hours) is ok, I'll take a wild guess and say it's the Timezone. But as JamWaffles says: Without code, we can do nothing but wild guesses.

By the way: what is "15 PM"? I guess you are talking about the timeranges 1200 - 1500 and 0900-1200 or 12 PM - 3 PM and 9 AM - 12 PM


Just to clarify, this was a TZ issue as Fildor mentioned. If you want the values to be in UTC, you should specify the following in the options:

global: {
    useUTC: false

As mentioned here:

Receiving incorrect datetimes when using milliseconds for x-axis?

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