...A SECOND, cultural difference often drives Americans and other foreigners in Mexico to distraction, largely because they refuse to admit its existence. It has to do with time: stereotypically and arrogantly it's called the manana syndrome, or, as the T-shirts have it, I'm on Mexican Time.
...The difference is not merely a question of punctuality, formality, or responsibility but rather one of the conception of time, its role in life, and its social function. The expression of the difference can undoubtedly be found in the stereotypes: Mexicans are, in most of the country, less punctual, quick, and hurried than Americans (or Germans or Britons, for that matter).
...There is a sociological explanation too. Because so many Mexicans work, live, and even love informally, time is not of the essence. Letting and watching time go by, being late (an hour, a day, a week), are not grievous offenses. They simply indicate a lower rung on the ladder of priorities. It is more important to see a friend or the family than to keep an appointment or make it to work, especially when work consists of hawking wares on street corners. An economic explanation is also available: there is a severe lack of incentives for being on time, delivering on time, or working overtime. Since most people are paid little for what they do, the prize for punctuality and formality can be meaningless: time is often not money in Mexico. The choice between making a few pesos more and having a good time is easy and as rational as any other. Everything is slow in Mexico, but not because Mexicans cannot do things quickly. Everything is slow because the passage of time is not very noticeable. Time is flat: too frequently nothing changes with time, and the sense of its going by -- the reason for putting a premium on it -- is absent. Much of Mexico lacks seasons except when it rains and when it doesn't, and in the countryside the dry season is basically devoted to waiting for rain; for this and more-complex reasons as well, time in Mexico is not what it is in the United States. Time divides our two countries as much as any other single factor.