presto-main/src/main/java/io/prestosql/operator/scalar/DateTimeFunctions.java/DateTimeFunctions/timeZoneMinuteFromTimestampWithTimeZone
class DateTimeFunctions:    @Description("time zone minute of the given timestamp")
    @ScalarFunction("timezone_minute")
    @SqlType(StandardTypes.BIGINT)
    public static long timeZoneMinuteFromTimestampWithTimeZone(@SqlType(StandardTypes.TIMESTAMP_WITH_TIME_ZONE) long timestampWithTimeZone)
    {
        return extractZoneOffsetMinutes(timestampWithTimeZone) % 60;
    }