2 deleted 4 characters in body
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C#, 9191 77 bytes

using System;n=n=()=>DateTime=>System.DateTime.Now;_=>{var t=n();while((n()-t).Seconds<50);Console.Write(t);;return t;};

C#, 91 bytes

using System;n=()=>DateTime.Now;_=>{var t=n();while((n()-t).Seconds<50);Console.Write(t);};

C#, 91 77 bytes

n=()=>System.DateTime.Now;_=>{var t=n();while((n()-t).Seconds<50);return t;};
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C#, 91 bytes

using System;n=()=>DateTime.Now;_=>{var t=n();while((n()-t).Seconds<50);Console.Write(t);};