Justin Greaves was the standout performer, scoring 101 for his maiden ODI century.
His innings gave the visitors a competitive total, but India responded with an impressive chase.
Captain Shubman Gill scored 110, while Kohli finished unbeaten on 139 as India secured an eight-wicket victory.
India completed the chase in 41.4 overs, leaving more than eight overs unused.
For Gill, it was another demonstration of his ability to build an innings at the top of the order. Kohli, meanwhile, turned the pursuit into a record-breaking occasion.
Kohli reaches 15,000 ODI runs
Kohli's unbeaten 139 carried significance beyond India's victory.
The 37-year-old reached 15,000 runs in men's ODI cricket, becoming only the second male player to achieve the milestone after Sachin Tendulkar.
He reached the mark in his 315th innings, compared with Tendulkar's 350 innings.
Kohli also registered his 55th ODI century and drew level with Tendulkar on 60 centuries in List A cricket.
His hundred came from 74 deliveries.
For a player whose reputation has been built partly on his ability to chase targets, the innings was another example of how effectively he can control a pursuit while maintaining a high scoring rate.
South Africa v Australia: Miller and Bavuma deliver in Johannesburg
In Johannesburg, South Africa's batters produced another commanding performance against Australia.
Captain Temba Bavuma scored 103, while David Miller struck an unbeaten 142 from just 93 balls.
Their fourth-wicket partnership was worth 156 runs and helped South Africa recover from a difficult start.
The hosts eventually reached 365 for nine.
Australia responded with 333 but were dismissed in the final over, giving South Africa a 32-run victory.
The result secured the three-match ODI series for South Africa with one match remaining.
Miller's innings stands out
Miller's unbeaten 142 was a career-best ODI score.
While Bavuma provided stability after South Africa's early wickets, Miller accelerated the scoring and transformed the innings into a total that proved beyond Australia's reach.
The contrast between the two contributions was central to South Africa's success.
Bavuma's century helped establish the innings. Miller's attacking finish gave the bowlers a substantial total to defend.
The performance also came during Johannesburg's Pink Day match, an occasion associated with breast cancer awareness.
England v Sri Lanka: Banton joins the century club
At The Oval in London, England opener Tom Banton added another hundred to the day's tally.
Banton scored 126 against Sri Lanka, registering his maiden ODI century.
He shared a 150-run partnership with England captain Harry Brook, who contributed 77.
Banton's innings included 16 fours and five sixes, underlining the attacking approach that made his performance one of the day's highlights.
His century also provided a different kind of milestone from Kohli's.
While the Indian veteran was extending an already substantial record, Banton was celebrating his first hundred in the format.
All six centuries at a glance
Batter | Team | Opposition | Runs |
|---|
Virat Kohli | India | West Indies | 139 not out |
Shubman Gill | India | West Indies | 110 |
Justin Greaves | West Indies | India | 101 |
David Miller | South Africa | Australia | 142 not out |
Temba Bavuma | South Africa | Australia | 103 |
Tom Banton | England | Sri Lanka | 126 |
What made the day remarkable?
Six centuries across three ODIs is an eye-catching statistic. But the more interesting story lies in what those innings meant for the players and their teams.
Greaves and Banton celebrated their first ODI hundreds.
Gill and Kohli helped India complete a convincing run chase.
Bavuma and Miller combined to set up a series-clinching victory over Australia.
And Kohli's latest century added another chapter to a career already defined by major batting records.
There is an important distinction, however: six centuries on the same day does not automatically establish an all-time world record. The reports reviewed confirm the six hundreds but do not establish that no previous day in ODI history has matched or exceeded the tally.
What Sunday certainly demonstrated was the variety of ways a century can influence a match.
Some innings established competitive totals. Others helped chase them down. Two came in a partnership that secured a series.
For cricket fans, 27 September 2026 will be remembered as a day when the bat dominated - and when six players, at very different stages of their careers, had reasons to celebrate.