CREATE TABLE table_22278 ("Departure" TEXT, "Going to" TEXT, "Calling at" TEXT, "Arrival" TEXT, "Operator" TEXT)

when does the train arriving at stamford east at 11.45 departure
SELECT "Departure" FROM table_22278 WHERE "Arrival" = '11.45' AND "Going to" = 'Stamford East'
SELECT "Departure" FROM "table_22278" WHERE "Arrival" = '11.45' AND "Going to" = 'Stamford East'