August 29 Thursday – From FE, Ch. II:

One or two days later [after four days out] we crossed the 25th parallel of north latitude, and then, by order, the officers of the ship laid away their blue uniforms and came out in white linen ones. All the ladies were in white by this time. The prevalence of snowy costumes gave the promenade deck an invitingly cool and cheerful and picnicky aspect [35].