CREATE TABLE table_20343 ("Name" TEXT, "Japanese" TEXT, "Date of designation" TEXT, "Date of reclassification" TEXT, "Region" TEXT, "Prefecture" TEXT)

Name thenames for 2002-04-01
SELECT "Name" FROM table_20343 WHERE "Date of designation" = '2002-04-01'
SELECT "Name" FROM "table_20343" WHERE "Date of designation" = '2002-04-01'