The phrase "already on Friday" is correct and usable in written English.
It can be used to indicate that something is happening or has happened by the time Friday arrives, often implying that it is sooner than expected.
Example: "I can't believe we are already on Friday; this week flew by!"
Alternatives: "by Friday" or "as early as Friday".
Already on Friday, the Labor Department reported that employment in nonresidential construction had begun to decline.
Already, on Friday it seemed quieter in Sadr City, with fewer attacks on American and Iraqi troops.
Already, on Friday, protesters had occupied a farmhouse on the Hinkley development site and were preparing to fight "for the long haul," The Guardian reported.
Already on Friday, Russia was shaking up the organization, with a Russian journalist suggesting at a news conference that perhaps it was time to add Russian to the W.T.O.'s three official languages, English, French and Spanish.
Already, on Friday and Saturday, Mr. Cohen said he saw employees removing toppers, industry slang for the signs tacked by the sale signs, in this case saying "From 8 a.m. to 11 a.m".
They have to answer for the vote". Already, on Friday, a number of Republicans in competitive districts announced they were voting no including Barbara Comstock, who represents a swing Virginia district just outside Washington.
Already on Wednesday, one Republican member of the House Financial Services Committee, Representative Roger Williams of Texas, criticized the Fed's move.
Lochte, 32, one of swimming's most decorated Olympians, had flown home already on Monday, a police spokesman said.
Already on Thursday the administration seemed to backtrack somewhat.
Already on Monday afternoon, there were reports that at least two French citizens were taken hostage by Gbagbo forces.
Already on Sunday night there were signs Haddad would seek to do just that.
