to the day
Of temporal measurements or comparisons: exactly; measured on the level of days, rather than more loosely by weeks, months etc.
It was a year ago to the day that I first met him.
Don't look forward to the day you stop suffering, because when it comes you'll know you're dead. Tennessee Williams
Every man ought to be inquisitive through every hour of his great adventure down to the day when he shall no longer cast a shadow in the sun. For if he dies without a question in his heart, what excuse is there for his continuance? Frank Moore Colby
I know a man who gave up smoking, drinking, sex, and rich food. He was healthy right up to the day he killed himself. Johnny Carson
Here's to the day when the complete works of Leon Trotsky are published and widely distributed in the Soviet Union. On that day the USSR will have achieved democracy! C. Wright Mills
And the dreams so rich in color. How else would death call you? Waking in the cold dawn it all turned to ash instantly. Like certain ancient frescoes entombed for centuries suddenly exposed to the day. Cormac McCarthy
All the windows of my heart I open to the day. John Greenleaf Whittier