CREATE TABLE table_57923 ("Number & name" TEXT, "Description" TEXT, "Current status" TEXT, "Livery" TEXT, "Date" FLOAT)

What is the date with identifying number of No. 37817?
SELECT "Date" FROM table_57923 WHERE "Number & name" = 'no. 37817'
SELECT "Date" FROM "table_57923" WHERE "Number & name" = 'no. 37817'