The phrase "a major day" is correct and usable in written English.
It can be used to refer to a significant or important day, often in the context of events or milestones.
Example: "Tomorrow is a major day for our company as we launch our new product."
Alternatives: "an important day" or "a significant day".
A major day of action kicked off early on Thursday, with marches and roadblocks across the country.
Hundreds of Kashmiri protesters hurled rocks at polling stations in the disputed Himalayan territory on Thursday and shouted "Down with India!" on a major day of voting in the country's general election.
Capping a major day for sea level rise news, Kopp also released a report Monday along with Benjamin Strauss of Climate Central and two other researchers, using the current study's approach to determine that thousands of coastal "nuisance" floods in the United States over the 20th century would not have happened without human-caused global warming.
Instead of forcing yourself to have a major day of cleaning out, just go day-by-day and shelf-by-shelf.
WASHINGTON -- Immigration activists are gearing up for a major day of action on Saturday directed squarely at President Barack Obama, demanding he halt deportations that split immigrants from their families and communities.
Or, as we have confirmed with calls to brokers we know, Monday was a major day of margin calls, when folks are forced to sell their more liquid positions to appease the margin clerks.
Over the last five years, an arts boom has transformed the valley, from Beacon, where the Dia Foundation's 240,000-square-foot temple to Minimalism has turned the diminutive city into a major day-trip destination, to Annadale-on-Hudson, where a dazzling concert hall designed by the architect Frank Gehry opened last year at Bard College.
Whatever happens tomorrow, I've been looking forward to being in this position in a major: Sunday with Tiger".
But he was playing to win a major Sunday, and his body language before and after shots made it look even harder.
In a major Friday night data dump, Facebook handed Congress a ~750-page document with responses to the 2,000 or so questions it received from US lawmakers sitting on two committees in the Senate and House back in April.
The event attracted more than 700 guests for a major Friday night gala at the St . Regis Monarch Beach Resort
