The phrase "a time when no one else" is correct and usable in written English.
It can be used to refer to a specific moment or period in which others were not present or involved.
Example: "I remember a time when no one else believed in my dreams, but I persevered."
Alternatives: "a moment when no one else" or "an occasion when no one else".
"You have to remember," Tomlin said, that, at a time when no one else cared, "Dr. Neustadt amassed this treasure trove of Tiffany lamps and kept them safe".
Years after he left public life, Dean Acheson, Truman's Secretary of State, viewed Vandenberg as someone capable of rising to a great occasion, doing so in a time when no one else in his party appeared willing to assume that role.
Organized crime cartels, he continued, have "huge amounts of capital to invest and launder at a time when no one else has any money," and mafias of every ethnicity are entering the banking system more easily than ever "because the banks have lowered their defenses".
Bloom, who divides his time between Sussex and Melbourne, said of Knight, who will remain as the club's life president: "Nobody should be in any doubt that he saved the club from almost certain extinction at a time when no one else was willing to come forward".
But just as cabdrivers need extra room for profit in snowy, treacherous conditions, speculative investors require high rates of interest during stormy periods so that they can be paid for taking risks at a time when no one else will.
"I decided that I would clear my office of my own personal items at a time when no one else was there". Di Canio acknowledged a "small amount of damage" caused in the process of removing the items, but added that his former assistant Fabrizio Piccareta had offered to pay for it.
They were "troubled refugees from Europe, who loved Europe and were kicked out by Europe, who were devoted Europeans at a time when no-one else was a European.
They will listen when no one else will.
The film carries the sense of a time when no one had much ear for any one else, least of all for the out-of-work.
He defended the rights of undocumented workers during a time when no one else not even Chavez would speak for them.
He took exercies and wrestled with me many times when no one else was present.
