指定 SAS 中的時區

options timezone='asia/tokyo';

data _null_;
o1=tzoneoff();
o2=tzoneoff('asia/tokyo');
put o1 time.;
put o2 time.;
run;

-5:00:00
9:00:00

diff=abs(tzoneoff('america/new_york') - tzoneoff('asia/tokyo'));

options timezone='America/Chicago';
data _null_;
tzid=tzoneid();
put 'Current time zone is ' tzid;
tzn=tzonename('america/los_angeles');
put 'Time zone for Los Angeles: ' tzn;
tznST=tzonename('america/los_angeles','10mar2013:01:00:00'dt);
put 'Time zone for Los Angeles standard time: ' tznST;
tznDT=tzonename('america/los_angeles','10mar2013:02:00:00'dt);
put 'Time zone for Lost Angeles daylight time: ' tznDT;
tznSDT=tzonename('10mar2013:02:00:00'dt);
put 'Time zone name for this SAS datetime: ' tznSDT;
run;

Current time zone is AMERICA/CHICAGO
Time zone for Los Angeles: PST
Time zone for Los Angeles standard time: PST
Time zone for Lost Angeles daylight time: PDT
Time zone name for this SAS datetime: CDT

options timezone='est';
data _null_;
put ' The time zone is EST';
diff=abs(tzoneoff('america/new_york') - tzoneoff('europe/london'));
put ' New York-London difference:' diff time.;
diff=abs(tzoneoff('america/new_york') - tzoneoff('asia/tokyo'));
put ' New York-Tokyo difference:' diff time.;
put ' The SAS datetime is 2013-03-15T09:15:00+00:00 ';
put ' ';
put ' Change a SAS datetime to a UTC value ';
put ' ';
put ' The time zone offset +00:00 is for London ';
put ' Subtract the 5 hours for the EST time zone offset'; 
stu1=tzones2u('2013-03-15T09:15:00+00:00'dt);
put ' STU1 Using E8601DX:' stu1 e8601dx.;
put ' ';
put ' 2013-03-15 9:15 AM in Tokyo is 2013-03-14 7:15 PM in New York'; 
put ' Subtract the 5 hours for the EST time zone offset'; 
stu2=tzones2u('2013-03-15T09:15:00+00:00'dt, 'Asia/Tokyo');
put ' STU2 Using E8601DX:' stu2 e8601dx.;
put ' ';
put ' Change a UTC to a SAS datetime value. ';
put ' ';
put ' +00:00 is the time zone offset for London.';
put ' Subtract the 5 hours for the EST time zone offset'; 
uts1=tzoneu2s('2013-03-15T09:15:00+00:00'dt);
put ' UTS1 Using DATETIME:' uts1 datetime.;
put ' ';
put ' 9:15:00+00:00 is 18:15:00 in Tokyo. ';
put ' Subtract the 5 hours for the EST time zone offset'; 
uts2=tzoneu2s('2013-03-15T09:15:00+00:00'dt, 'Asia/Tokyo');
put ' UTS2 Using DATETIME:' uts2 datetime.;
run;

The time zone is EST
New York-London difference: 5:00:00
New York-Tokyo difference:14:00:00
The SAS datetime is 2013-03-15T09:15:00+00:00

Change a SAS datetime to a UTC value

The time zone offset +00:00 is for London
Subtract the 5 hours for the EST time zone offset
STU1 Using E8601DX: 2013-03-15T04:15:00-05:00

2013-03-15 9:15 AM in Tokyo is 2013-03-14 7:15 PM in New York
Subtract the 5 hours for the EST time zone offset
STU2 Using E8601DX: 2013-03-14T14:15:00-05:00

Change a UTC to a SAS datetime value.

+00:00 is the time zone offset for London.
Subtract the 5 hours for the EST time zone offset
UTS1 Using DATETIME:14MAR13:23:15:00

9:15:00+00:00 is 18:15:00 in Tokyo.
Subtract the 5 hours for the EST time zone offset
UTS2 Using DATETIME:15MAR13:13:15:00

options timezone='Australia/Sydney';
data _null_;
st='18:33:40't;
sdt='2013-03-17T14:30:22+00:00'dt;
put 'Time B8601TX:' st b8601tx.;
put 'Time E8601TX:' st e8601tx.;
put 'UTC B8601DX:' sdt b8601dx.;
put 'UTC E8601DX:' sdt e8601dx.;
put 'UTC B8601LX:' sdt b8601lx.;
put 'UTC E8601LX:' sdt e8601lx.;
run;

Time B8601TX: ********+1100
Time E8601TX: ********+11:00
UTC B8601DX: 20130318T103022+1000
UTC E8601DX: 2013-03-18T10:30:22+10:00
UTC B8601LX: 20130318T003022+1000
UTC E8601LX: 2013-03-18T00:30:22+10:00

options timezone='Indian/Maldives';
data _null_;
st='18:33:40't;
sdt='2013-03-17T14:30:22+00:00'dt;
put 'Time NLDATMTZ:' st nldatmtz.;
put 'SAS datetime NLDATMZ:' sdt nldatmz.;
put 'SAS datetime NLDATMWZ:' sdt nldatmwz.;
run;

Time NLDATMTZ:18:33:40 +0500
SAS datetime NLDATMZ:17Mar2013:19:30:22 +0500
SAS datetime NLDATMWZ:Sunday, March 17, 2013 07:30:22 PM +0500