"Hawaii local time April 15", the statement read.
Fears have grown since the US Navy fired Tomahawk missiles at a Syrian airfield last week in a unilateral decision claiming "retaliation" for an alleged chemical attack in the Arab country.
"The missile blew up nearly immediately".
A total of 56 missiles of 10 types were displayed, culminating in enormous rockets on articulated trailers and on 16-wheel vehicles.
Pyongyang's leaders regularly threaten the United States and South Korea with destruction.
However, after the summit, Trump commented that Chinese President Xi Jinping had "explain [ed] thousands of years of history with Korea".
In South Korea, there is no sign of tension either but also very little talk of war.
Kim Dong-yub, a North Korea expert at Seoul's Institute for Far Eastern Studies, said the canisters and trucks suggested that the North was developing technology to "cold launch" ICBMs, ejecting them from the canisters before they ignite.
The North launched a ballistic missile from the same region earlier this month ahead of a summit between the United States and China to discuss the North's arms programme.
The display raised concerns that North Korea has developed intercontinental ballistic missiles that would allow the country to attack the mainland US and Europe, according to CNN.
North Korea on Saturday kicked off grand celebrations marking the 105th birth anniversary of its founder, Kim Il Sung.
Rows of military bands and columns of troops marched into Pyongyang's main Kim Il-sung square in the heart of the city.
The nuclear-armed North is under United Nations sanctions over its weapons programmes, and has ambitions to build a rocket capable of delivering a warhead to the U.S. mainland - something Mr Trump has vowed "won't happen".
"Trump is always making provocations with his aggressive words ..."
Speculation that Pyongyang could conduct a sixth blast in the coming days to coincide with the anniversary has reached fever pitch, with specialist United States website 38North describing its Punggye-ri test site as "primed and ready" and White House officials saying military options were "already being assessed".
As tensions between North Korea and the USA rose in recent days, speculation had grown that Kim Jong Un would conduct a nuclear test or other major military test.
"Outside South Korea, some people are anxious, but we don't feel like that in our daily lives", said Choi Na-young, an office worker in central Seoul.
Long term, both McCaffrey and Jacobs think North Korea will not abandon its nuclear program, at least not willingly. "If not, we will solve the problem without them", he wrote.
"We've tried persuasion, it's failed, we've tried coercion, it's failed". He was the grandfather of the current leader, Kim Jong Un.
The U.S. Pacific Command said in a statement that Sunday's missile exploded on launch.
"Actually what our objectives should be and what we need to do is explain to China that it's in their interest (to see North Korean regime collapse), despite years of policy to the contrary".
With the men wearing pins adorned with photos of Kim Il Sung, and the women in brightly colored traditional dress, crowds lined up to bow to portraits of their state founder before touring an exhibition of photos and North Korean paintings.
The arsenal of weapons on display included the new ballistic missile - which is thought to have a range of around 600 miles - and what appeared to be a battery of KN-08 and KN-14 missiles, which analysts believe could reach the U.S. mainland. Analysts say the missiles could one day be capable of hitting targets as far as the continental United States, although North Korea has yet to flight test them.
In his annual New Year's address, Kim said North Korea's preparations for an ICBM launch had "reached the final stage". The country conducted two nuclear tests previous year.
Other weaponry exhibit during the parade included tanks, multiple rocket launchers and artillery guns, as well as a solid-fuel missile created to be fired from submarines.