Before the 1955 revisions to the Office and the some of governing rubrics of the Mass, it was traditional on all penitential weekdays (i.e. from Monday’s Matins until Saturday’s None when the Office was of the Ferial Day) to pray the Office through to and including None in the morning. Following None, the principal Mass of the day would then be offered, after which Vespers would take place. These all transpired before midday such that Mass and Vespers being completed, the main meal of the day would then be served just after midday, as is traditional in some European societies. Hence, there was an old rubric stating that Vespers is prayed ante prandium, that is before the midday meal or what in modern parlance is called lunch. After 1955, this rule was suppressed (just in case one is utilizing an older text), but in no way, does that mean that one cannot still follow this traditional arrangement. Regardless of the time of praying the Office, the long established tradition is to delay eating until after Vespers is prayed on fast days. Compline would, in any case, still be prayed at night before retiring for bed.
The above does not apply on Sundays and Feast Days; on these days, which are not days of fasting, Mass would follow the Office of Terce, all of the other Offices would take place according to their normal schedules, and Vespers would occur at its normal evening hour.