Time from timestamp?

[Rikki Cattermole via Digitalmars-d-learn]

On 31/01/2015 12:06 p.m., ketmar wrote:
> On Fri, 30 Jan 2015 22:38:20 +0000, Chris Williams wrote:
>
>> Unix timestamps can be negative
> WUT?! O_O

Looks like we are both thinking the usual case.

The standard Unix time_t (data type representing a point in time) is a 
signed integer data type, traditionally of 32 bits (but see below), 
directly encoding the Unix time number as described in the preceding 
section. Being 32 bits means that it covers a range of about 136 years 
in total. The minimum representable time is 1901-12-13, and the maximum 
representable time is 2038-01-19. The second after 03:14:07 UTC 
2038-01-19 this representation overflows. This milestone is anticipated 
with a mixture of amusement and dread; see year 2038 problem.

 From wikipedia.

https://github.com/D-Programming-Language/druntime/blob/master/src/core/stdc/time.d#L68

Looks like I got to modify it.