Why does `date` and `time` display different time ?

Code:
>uname -a
FreeBSD mybsd.zsoft.com 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan  3 07:15:25 UTC 2012 
root@obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC

>date
2012年 4月13日 星期五 [color="red"]15时06分54秒[/color] CST

>time
4.193u 1.166s [color="Red"]7:57:49.19[/color] 0.0%   779+3808k 998+130io 1308pf+0w

Sincerely!
 
Under which circumstances is that the output of the time command anyway? By itself it should print nothing more than:

Code:
  0m0.00s user     0m0.00s system

when it's the shell builtin, or nothing at all when it's /usr/bin/time.
 
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