日期+时间怎么算出小时中间相差多少小时

申请时间截止时间

2012-08-0609:21:482012-08-1215:54:35

2012-08-0609:21:482012-08-1212:46:29

2012-09-1009:27:352012-09-1609:32:16

2012-09-1009:27:352012-09-1810:02:29

2012-09-2208:58:212012-09-2409:37:38

2012-09-2208:58:212012-09-2809:37:33

2012-09-2513:42:242012-10-0113:46:08

2012-09-2513:42:242012-10-0117:10:07

2012-09-2515:32:562012-10-0115:40:09

2012-09-2515:32:562012-10-0115:36:13

2012-09-2515:41:052012-10-0115:45:16