From Frederick Brown’s definitive biography of Flaubert, a typical day during the writing of Madame Bovary in 1851-56. Flaubert was 30-35 at the time.
Flaubert, a man of nocturnal habits, usually awoke at 10 a.m. and announced the event with his bell cord. Only then did people dare speak above a whisper. His valet, Narcisse, straightaway brought him water, filled his pipe, drew the curtains, and delivered the morning mail. Conversation with Mother, which took place in clouds of tobacco smoke particularly noxious to the migraine sufferer, preceded a very hot bath and a long, careful toilette involving the regular application of a tonic reputed to arrest hair loss. At 11 a.m. he entered the dining room, where Mme. Flaubert; Liline [Flaubert's niece]; her English governess Isabel Hutton; and very often Uncle Parain would have gathered. Unable to work well on a full stomach, he ate lightly, or what passed for such in the Flaubert household, meaning that his first meal consisted of eggs, vegetables, cheese or fruit, and a cup of cold chocolate.… In June 1852, Flaubert [wrote in a letter] that he worked from 1 p.m. to 1 a.m. A year later, when he assumed partial responsibility for Liline’s education and gave her an hour or more of his time each day, he may not have put pen to paper at his large round writing table until two o’clock or later.