@timestamp doesn't match with my computer times

Hi, I having a problem with times. because this output doesn't match with my computer times.
I used ctx.trigger.scheduled_time to print times.
this output

2017-07-12T11:11:38.878Z

and time at my computer

2017-07-12 18:11:38

and i live at asia/bangkok UTC +07.00

thanks.

This @timestamp input data by metricbeat.

And this times on my computer

11:55:47

From what I know, ElasticSearch stores in @timestamp the UTC time of when the document was indexed. Why do you want the @timestamp value to be the same as your local time?

Thanks for reply @Rory .
Because it will be easy to check and we're familiar with local time rather than UTC.