Here, though it might be an older version of the site?

2First Class complimentary meal times: flights of 900-1500 miles -- breakfast is served on flights departing between 5 am – 9:45 am; lunch is served on flights departing between 9:46 am – 1:30 pm; and dinner is served on flights departing between 4 pm – 8 pm.

Flights over 1500 miles: breakfast is served on flights departing between 5 am – 9:45 am; lunch is served on flights departing between 9:46 am – 3:59 pm; dinner is served on flights departing between 4 pm – 8 pm.