CREATE TABLE table_31977 ("Candidate" TEXT, "Party" TEXT, "Constituency" TEXT, "Year" TEXT, "Days" TEXT)

What are the number of days in 1945 where the constituent was heywood and radcliffe?
SELECT "Days" FROM table_31977 WHERE "Year" = '1945' AND "Constituency" = 'heywood and radcliffe'
SELECT "Days" FROM "table_31977" WHERE "Constituency" = 'heywood and radcliffe' AND "Year" = '1945'