I have tried with getdate please change it to the date you need and I have convereted into a string..
UPDATE [EC_StoreAttributes]
SET Left(AttributeValue, 2) = SELECT RIGHT(CONVERT(VARCHAR(10),GETDATE(),101),2)
, Right(AttributeValue, 2) = SELECT LEFT(CONVERT(VARCHAR(10),GETDATE(),101),2)
WHERE
AttributeType = 'ECSRCCODE' and StoreRecordId = '1'
Hope this should work!!
Happy coding