Extending DateTime for common queries. Follows the same method names as MomentJs.

DateTimeExtensions

//http://momentjs.com/docs/#/query
public static class DateTimeExtensions
{
    public static bool IsSame(this DateTime source, DateTime value)
    {
        return source.CompareTo(value) == 0;
    }

    public static bool IsBefore(this DateTime source, DateTime value)
    {
        return source.CompareTo(value) < 0;
    }

    public static bool IsSameOrBefore(this DateTime source, DateTime value)
    {
        return source.CompareTo(value) <= 0;
    }

    public static bool IsAfter(this DateTime source, DateTime value)
    {
        return source.CompareTo(value) > 0;
    }

    public static bool IsSameOrAfter(this DateTime source, DateTime value)
    {
        return source.CompareTo(value) >= 0;
    }
}