How is 3.11 pronounced? When referring to the earthquake, tsunami and nuclear incident, is "3.11" pronounced "San gatsu ju ichi nichi", or is there a shortened version, like "nine one one" or "September eleven" for the terrorist attacks on September the eleventh?

For `2.26` or `5.15`, I remember learning them to be read as "", "," but I also hear people reading them as "", "." Other than these two, as far as I know, incidents written like this seem to be read simply as if you read a number with a decimal point, like "."