CREATE TABLE table_48502 ("Result" TEXT, "Record" TEXT, "Opponent" TEXT, "Method" TEXT, "Event" TEXT, "Round" FLOAT, "Time" TEXT, "Location" TEXT)

What time was the event k-1 the challenge 1999?
SELECT "Time" FROM table_48502 WHERE "Event" = 'k-1 the challenge 1999'
SELECT "Time" FROM "table_48502" WHERE "Event" = 'k-1 the challenge 1999'