CREATE TABLE table_12857 ("Designation" CLOB, "Launch date/time  (  GMT  ) " CLOB, "Mass" CLOB, "Apogee" CLOB, "Inclination" CLOB)

What is Mass, when Launch Date/Time ( GMT ) is 25 November 1976, 03:59?
SELECT "Mass" FROM table_12857 WHERE "Launch date/time ( GMT )" = '25 november 1976, 03:59'
SELECT "Mass" FROM "table_12857" WHERE "Launch date/time ( GMT )" = '25 november 1976, 03:59'