public static long normalizeDate(long startDate) {
        // normalize the start date to the beginning of the (UTC) day
        Time time = new Time();
        time.set(startDate);
        int julianDay = Time.getJulianDay(startDate, time.gmtoff);
        return time.setJulianDay(julianDay);
    }
Defines table and column names for the weather database.
app/src/main/java/com/example/android/sunshine/app/data/WeatherContract.java