CREATE TABLE table_24972 ("#" TEXT, "Spacecraft" TEXT, "Spacewalkers" TEXT, "Start  (  UTC  ) " TEXT, "End  ( UTC ) " TEXT, "Duration" TEXT)

What is the end (UTC) if the duration is 6 hours, 55 minutes?
SELECT "End (UTC)" FROM table_24972 WHERE "Duration" = '6 hours, 55 minutes'
SELECT "End (UTC)" FROM "table_24972" WHERE "Duration" = '6 hours, 55 minutes'