[racket] min and max representable dates

On Sun, Mar 01, 2015 at 04:07:57PM -0800, Jordan Johnson wrote:
>
> I expect a pretty conservative estimate is A-OK if it’d be sure of 
> not throwing an error on 32+-bit systems;
> I see 2^32 seconds would get us at least to the year 2106...

Which is why the world is shifting to 64-bit dates.

If we don't do this, Unix's Y2K event is expected by around 2038  I 
think that may be when the date invades the sign bit.

-- hendrik