Golang日期时间结构

I'm trying to build golang date time struct and I'm having some issues. Please help me build the model.

Thanks again

 "effectiveDates" : {
    "startDate" : {
        "_class" : "com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl", 
        "year" : NumberInt(2008), 
        "month" : NumberInt(10), 
        "day" : NumberInt(16), 
        "timezone" : NumberInt(-300), 
        "hour" : NumberInt(9), 
        "minute" : NumberInt(50), 
        "second" : NumberInt(13)
    }
}