That’s roughly 38.5 iPhones every second. This is the biggest launch Apple has had to date — if anything, the bigger screens attracted more customers instead of detracting them. I’d love to know the breakdown between the 6 and the 6 Plus.
See also MacStories’ chart looking at past iPhone opening weekends. From the four times where Apple has let on what their initial 24-hour pre-order numbers were, it seems that opening weekend sales are roughly 1 part pre-orders from the first 24 hours of pre-orders being open, and 1.5 parts later pre-orders plus in-store shoppers.