what's the best way to convert a sysTime to local machine's time (zone)?

[mw]

Hi,

I'm just wondering what's the best way to convert sysTime to 
local machine's time (zone)?

Is there any library function does this already?


https://dlang.org/phobos/std_datetime_systime.html#SysTime

(The time in SysTime is kept internally in hnsecs from midnight, 
January 1st, 1 A.D. UTC.)

Thanks.