CREATE TABLE table_1558077_8 (lunar_blastoff_date VARCHAR, mission_name VARCHAR)

Name the total number of luna blastoff date for apollo 11
SELECT COUNT(lunar_blastoff_date) FROM table_1558077_8 WHERE mission_name = "Apollo 11"
SELECT COUNT("lunar_blastoff_date") FROM "table_1558077_8" WHERE "Apollo 11" = "mission_name"