I did some math and research. Based off the book, Hobbit meal times ("Six a day, (when they can get them)." Prologue, Fellowship of the Ring) are:
8:30a - Breakfast
11:00a - Elevenses
1:30p - Lunch
4:00p - Tea
6:30p - Supper
9:00p - Second Supper (Also known as After Supper Snack, or Before Bed Snack)
"...From elevenses until six-thirty..." A Long Expected Party, Fellowship of the Ring
" 'We had our supper early with Farmer Maggot,' said Frodo; 'But we could do with another.' " A Conspiracy Unmasked, Fellowship of the Ring
It doesn't say anything about Breakfast, Lunch or Second Supper, but knowing a little about Hobbit schedules and staying in line with all the math, these times would make sense.
"I am in fact a Hobbit in all but size. ....I go to bed late and get up late (when possible)." - J. R. R. Tolkien
" 'Naught wakes hobbit-folk in the early morning. In the night the little folk wake up in the darkness, and sleep after light has come!' " Tom Bombadil in In the House of Tom Bombadil, Fellowship of the Ring
Sorry, Pippin. No second breakfast.