Russian fans danced in the streets of Kaliningrad on the Baltic and kissed strangers in Vladivostok in the Far East after their team defied all expectations to reach the World Cup quarter-finals.
In the Black Sea resort of Sochi, thousands of fans with Russian flags draped around their shoulders watched a giant screen transfixed and cars in central Moscow honked from dusk till dawn.
A mixture of disbelief and jubilation is gripping the host nation after their team pulled off one of the biggest World Cup upsets in recent memory, sending 2010 champions Spain packing after a penalty shootout decided their last-16 tie.
"It's great. Unbelievable. We are champions," 27-year old Muscovite Anna Glazkova said after Sunday's match. We believe we will now be in the final with Brazil."
The penalty shootout turned goalkeeper Igor Akinfeev into a national hero after a backs-to-the-wall performance in which they had just over a quarter of possession.
"What is there to hide, we were hoping for penalties," Akinfeev admitted to reporters.
It is the type of honesty that is endearing this rag-tag team of journeymen to a nation unused to celebrating its football team.
Russia is at heart an ice hockey country in which the beautiful game is played -- but not necessarily very well.
The chant often filling Russian stadiums during matches is "shai-bu!" -- the word for "hockey puck" -- a teasing reminder to the footballers that their hockey counterparts know how to score.
But the roar of the 80,000-crowd packed into Moscow's Luzhniki Stadium -- the same word echoing in bars and metro stations and shouted in Komsomolsk-on-Amur 6,000 kilometres (3,800 miles) to the east -- was "Ro-ssi-ya!" over and over again.
"Hurray!" Russian cosmonaut Oleg Artemyev tweeted from the International Space Station after watching the match streamed live on a floating laptop.
"I always knew we could do it," a shaman from Siberia told the national Komsomolskaya Pravda newspaper.
Coach Stanislav Cherchesov had already made history by leading Russia out of the group for the first time since the Soviet era.
Many feared the worst when the hosts entered the tournament as the lowest-ranked team and without a win in eight months.
But Russia thumped Saudi Arabia and Egypt by a combined 8-1 margin in the first two games. They played attacking football. They looked like they belonged.
A 3-0 defeat in their final group match to Uruguay dampened spirits and set the scene for Sunday's nervy clash against a Spain side that had not lost in two years -- a run of 23 games.
The match added with the Sport Express daily running just one word across its front page: "HURAAAAAAAY!"
Cherchesov has now written another page of history, becoming just the second Soviet or Russian coach to win in the knockout stage of a World Cup.
The Soviets beat Hungary in 1966 end went on to finish fourth in England but their last appearance in the quarter-finals came in 1970.
Their next one comes on Saturday when they play Croatia in Sochi's Fisht Stadium -- home of the 2014 Winter Olympics.
Russia are now just two wins away from being in the final and playing for the right to lift the trophy in front of President Vladimir Putin at the Luzhniki on July 15.
The sports-mad Russian leader stayed away from the stadium on Sunday because of what the Kremlin said was a busy schedule.
Many on social media speculated it was because most expected Russia to lose.
But their next opponents, Croatia, led by graceful midfielder Luka Modric, looked vulnerable before beating Denmark in their own shootout drama in Nizhny Novgorod.
If they win that match, Russia could potentially play England in the semi-finals and then realise Muscovite Glazkova's dream of going up against five-time champions Brazil with the trophy at stake.
Moscow, Russia | AFP