JS API Reference

Welcome to the Highcharts JS Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

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time.getTimezoneOffset

A callback to return the time zone offset for a given datetime. It takes the timestamp in terms of milliseconds since January 1 1970, and returns the timezone offset in minutes. This provides a hook for drawing time based charts in specific time zones using their local DST crossover dates, with the help of external libraries.