1、时间戳计算

*----------------------------------------Begin of 时间戳--------------------------------*
DATA: dat TYPE sy-datum,
      tim TYPE sy-uzeit,
      timstmp TYPE timestamp.

dat = sy-datum.
tim = sy-uzeit.
**
PERFORM convert_datum_to_timestamps USING dat tim CHANGING timstmp.

WRITE: '现在时间：', timstmp.


***&---------------------------------------------------------------------*
***&      Form  convert_datum_to_timestamps
***&---------------------------------------------------------------------*
FORM convert_datum_to_timestamps USING p_date TYPE d
                                       p_time TYPE t
                                 CHANGING p_timestamp TYPE timestamp.
  DATA: l_timezone  LIKE ttzz-tzone VALUE 'UTC+8'.
  CONVERT DATE p_date
          TIME p_time
          INTO
          TIME STAMP p_timestamp  TIME ZONE l_timezone.
ENDFORM.
*----------------------------------------End of 时间戳---------------------------------*

2、还可以直接调用function执行

CONVERT_INTO_TIMESTAMP

参数I_TZONE 可以 传入系统时区 SY-ZONLO，其他都是系统日期和系统时间。