Get Time Zone Name or Time Zone ID Using UTC Offset

[UdayGuntupalli]

All, 
    Is there a way to determine the current Time Zone Name or Time Zone ID using UTC offset ? For e.g. 

Data Test; 
       UtcOffset = -7; 
Run; 

   I would like to retrieve enough information to be able to call tzones2u function i.e. timezone id . 

   Alternatively, even a macro based solution is fine if I have the following 

%Let UtcOffset = -7; 

Best 

Uday

[ChrisNZ]

I don't know of a built-in function.

If there none, you can easily build an informat from the pages Time Zone IDs and Time Zone Names

[UdayGuntupalli]

@ChrisNZ , 
    I am able to implement it in a different way : 

data _null_;

start_date = datetime();

new_date1 = intnx("HOUR",start_date,-3);

format new_date1 datetime.;

put new_date1; 

run;

%Let t1 = %sysfunc(datetime()); 
%Let t2 = %sysfunc(intnx(hour,%sysfunc(datetime()),-3,same), datetime.);
%Put &t2;