using System;
class MainClass
{
public static void Main()
{
TimeSpan timespan1 = new TimeSpan(2, 12, 0, 0);
TimeSpan timespan2 = new TimeSpan(4, 12, 0, 0);
TimeSpan oneWeek = timespan1 + timespan2;
DateTime now = DateTime.Now;
DateTime past = now - oneWeek;
DateTime future = now + oneWeek;
Console.WriteLine("Now : {0}", now);
Console.WriteLine("Past : {0}", past);
Console.WriteLine("Future: {0}", future);
}
}
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