Expectations are high the North may put its newest missiles on display during a military parade that could be held to mark the event.
Trump has dispatched the aircraft carrier USS Carl Vinson and an accompanying battle group to the Korean peninsula.
Vice foreign minister warns Pyongyang "fully prepared" for USA attack with "powerful nuclear deterrent" at the ready.
Trump has urged China to step up measures to prevent North Korea from carrying out more nuclear and weapons tests, and threatened USA intervention if Beijing-Pyongyang talks falter. The minister said there was a "vicious cycle" happening on the Korean Peninsula, and that Pyongyang wouldn't countenance a preemptive strike from Washington.
His comments were the bluntest this week from China, which has been trying to steer between the Trump administration's demands for it to do more to stop North Korea's nuclear weapons program and its longstanding reluctance to risk a rupture with the North, its neighbor and longtime partner.
North Korea in February claimed that it successfully test-fired a surface-to-surface "medium long-range ballistic missile" known as the Pukkuksong-2, which is potentially capable of carrying a nuclear warhead.
Outwardly, there are few signs of concern in North Korea despite the political back and forth.
North Korea rolled out its military hardware Saturday at its annual Day of the Sun celebration commemorating the 105th birth anniversary of the country's founder, Kim Il Sung, the grandfather of current leader, Kim Jong Un.
It said the Trump administration's "serious military hysteria" had reached a "dangerous phase that can no longer be overlooked".
"We will respond to an all-out war with an all-out war and a nuclear war with our style of a nuclear attack", said Choe Ryong Hae as translated by the BBC.
Leaders have grown increasingly frustrated with Kim Jong Un's regime for refusing to heed warnings over weapons testing.
"North Korea is a problem", Trump said April 13.
Meanwhile, Vice President Pence is traveling to South Korea this weekend.
Both China, the North's sole major ally, and Russian Federation have urged restraint, with Beijing's foreign minister, Wang Yi, warning on Friday that "conflict could break out at any moment".
The move, coupled with the USA retaliatory strikes last week against Syria over a chemical weapons attack on civilians, and the depoyment of a huge bomb against IS positions in Afghanistan earlier this week, touched off fear in South Korea that the United States was preparing for military action against the North.
"We call on all parties to refrain from provoking and threatening each other, whether in words or actions, and not let the situation get to an irreversible and unmanageable stage", Chinese Foreign Minister Wang Yi told reporters in Beijing.