>>531 の "at a time we need it most" に似たような "at a time" の例を
Corpus of Contemporary American English (COCA) で探してみた。

(1) 2012, spoken, ABC 放送, 20/20, USA
... track suit, and a voice that brought the country together
★at a time we needed it most★.

(2) 1993, news, Atlanta、USA
... giving us one of his greatest performances ★at a time we needed it most★.

(3) 2008, news, San Francisco Chronicle, USA
It would stimulate the economy, ★at a time we need it most★, by generating
nearly 300,000 job-years of employment in the construction industry, ....