In Eastern Mongolia, age is traditionally determined based on the number of full moons since conception for girls, and the number of new moons since birth for boys.In Japan, Vietnam, and South Korea, New Year's Day as the date for change of age is used for traditional fortune-telling or religion.
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Dr Aric Sigman, a leading psychologist, said: “The problem with this generation is that we accept there should be limits on the consumption of many things, such as sunlight or sugar and salt, but screen time is not something that is thought of as consumption.
“It is important to impose boundaries, rules and limits.
The idea of a universal birthday disappeared from all of the Sinosphere, China and Japan having switched over to the western age reckoning system.), meaning "years of age", is used for age counting.