There's a lot that can go wrong the first day of trading, and negotiating the opening trade typically takes several hours for a large listing. (finance.yahoo.com)
Likewise, if your battery has been fully discharged 100 %, it'll take several hours of driving in order to fully charge it back up. (mechanics.stackexchange.com)
Bring to a boil then simmer until lamb is very tender, this can take several hours in a normal pan. (foodtasia.com)