Non-idiomatic Time Format Used

[MarkRosemaker]

For some reason, the time format 2006-01-02T15:04:05.000Z is used instead of the idiomatic time.RFC3339 or time.RFC3339Nano.

This does not work well for different time zones or daylights saving time (playground link).

Possible fixes:

• One solution would be to change the format to time.RFC3339Nano. It is unclear if API can handle the different format.
• We should at least make sure that the time is set to the UTC location: Change date location to UTC before formatting #113