/// <summary>
/// Returns an <see cref="Interval"/> representing the local date in the given time zone.
/// </summary>
/// <param name="date">A local date.</param>
/// <param name="timeZone">A time zone.</param>
/// <returns></returns>
public static Interval ToIntervalInZone(this LocalDate date, DateTimeZone timeZone)
{
var start = timeZone.AtStartOfDay(date);
var end = timeZone.AtEndOfDay(date);
return(new Interval(start.ToInstant(), end.ToInstant()));
}