The Chinese government reportedly asked its airline bosses to be in the air midnight December 31, 1999. If an airline didn't pay enough attention to the Y2K problem, it is assumed that they are now working on this overtime. Y2K is a problem in two ways. This could create havoc or worse for some industries, such as banking, airlines or telecommunication. Second, date-sensitive information could become bad.
Most countries do have airlines, banks and telephone companies.
They probably should fix the problems there. However, developing countries tend to have few interconnected computer systems. Nor do they have much time-sensitive information. Y2K is unlikely to be a serious threat to normal life. If one believes how much American companies have invested in Y2K, many developing countries would go bankrupt if they were to spend proportionally as much on their usually outdated computer systems.