An arbitrary size and precision date and time stored using a BigReal.
$ dotnet add package BigDateTimeA more flexible alternative to DateTime in C# that can represent any date and time, even 60242/1/5 23:59:22.
The first of its kind to my knowledge.
Console.WriteLine(BigDateTime.Now().AddYears(100_000)); // 102024/10/24 23:59:44
Console.CursorVisible = false;
while (true) {
Console.SetCursorPosition(0, Console.CursorTop);
Console.Write(BigDateTime.Now().ToLongString().PadRight(50));
Thread.Sleep(TimeSpan.FromSeconds(0.05));
}