IB_CONVERT_FROM_TIMESTAMP,IB_CONVERT_INTO_TIMESTAMP 转换日期时间的时区

DATA:LV_DATE TYPE TZONREF-TSTAMPS.
CALL FUNCTION 'IB_CONVERT_INTO_TIMESTAMP'
  EXPORTING
    I_DATLO = SY-DATUM "*20091220*
    I_TIMLO = SY-UZEIT "*000000*
    I_TZONE = SY-ZONLO "*CHINA* 这个没试过 不一定对，
  IMPORTING

    E_TIMESTAMP = LV_DATE. "格林威治时间*

CALL FUNCTION 'IB_CONVERT_FROM_TIMESTAMP'
EXPORTING
i_timestamp = timestamp
I_TZONE = 'PST'
IMPORTING
E_DATLO = date
E_TIMLO = time.