SET TIME_ZONE='+00:00' at top of dump to allow dumping of
TIMESTAMP data when a server has data in different time
zones or data is being moved between servers with
different time zones.

mysql> select * from t1;
+----+---------------------+
| id | cur_time            |
+----+---------------------+
|  1 | 2010-03-14 08:58:18 |
+----+---------------------+

mysqldump --tz-utc=1 -t test t1 > t1.sql
#查看内容
cat t1.sql
/*!40103 SET TIME_ZONE='+00:00' */;
....
INSERT INTO `t1` VALUES (1,'2010-03-14 00:58:18');

mysqldump --tz-utc=0 -t test t1 > t1_1.sql
#查看内容
cat t1_1.sql
INSERT INTO `t1` VALUES (1,'2010-03-14 08:58:18');