# time scale label should in local time when timestamp (in UTC) input, tick should align with day.

# time scale label should in UTC time when option.useUTC is `true`, tick should not align with day.
tooltip (default) should be OK.

# time scale label should in UTC time when option.useUTC is `true`, tick should not align with day.
tooltip (formatter: series0 2017-02-09 16:00) should be OK.

# useUTC: null, should display '00:00 01-03' in tooltip on the 1st point

# useUTC: true, should display '16:00 01-02' in tooltip on the 1st point