deathbed; dying hour; one's final moments
Refers to the very last moments of life, often used in solemn or formal contexts. Commonly appears in phrases like 臨終を迎える (to meet one's end) or 臨終の床 (one's deathbed).
My grandfather passed away surrounded by his family.
On his deathbed, he left his final words.
The whole family was present at their grandfather's deathbed.
He quietly passed away.