While North Korea marked the birth of its founder Kim Il Sung with flowers and the usual show of reverence, a group of South Koreans burned effigies of the Kim family on Monday.
Pictures of the North's holy trinity, Kim Il Sung (Great Leader), the late Kim Jong Il (Dear Leader), and current ruler Kim Jong Un went up in flames in Seoul as protesters chanted slogans and held placards.
It was suspected that the North would during its celebrations launch a missile test, inflaming already high tensions in the Korean Peninsula. But South Korea said there had been no signs of a missile launch.
"North Korea is not believed to have launched a missile on the occasion of the Day of the Sun of which today's is the 101st," said defense ministry spokesman Kim Min-seok.
"But the military is not easing up on its vigilance on the activities of the North's military with the view that they can conduct a provocation at any time," Min-seok added.