The experts advise that people should plan to exercise,eat and sleep at the same times each day.

VOA: special.2010.03.30

Several countries will also organize a national exercise on the same day or at a later date, involving in some cases local municipalities and decision makers, civil protection and emergency units.

UNESCO: Indigenous Peoples

If you repeat the exercise next day, they achieve the same thing - but this time they do it even faster.

BBC: NEWS | Science/Nature | Ants - learning from the collective