"exhaustive day" is correct and usable in written English.
You can use it in a variety of contexts, often to describe a day that has been filled with activities and responsibilities, leaving you feeling drained or exhausted. For example, you could say: "Yesterday was an exhaustive day - I went to work, did the grocery shopping, and cooked dinner for my family."
The prize they were fighting for in an exhaustive three-day sprint was a place on the primary ballot in September.
On an exhaustive six-day bus tour, the first-term Texas senator is – in the words of his campaign – Cruzin' to Caucus.
Its verdict follows an exhaustive five-day inspection last September and a follow-up visit on 2 January, which found that some improvements were still needed.
US federal authorities were beginning an exhaustive investigation Monday into what caused a New York City commuter train to derail, killing four people and injuring more than 60 others.
The last two of seven fugitives from Texas were apprehended early this morning in Colorado Springs, ending an exhaustive 42-day search for the men, who the authorities believe killed a police officer 11 days after they escaped from a maximum-security prison.
Dive teams discovered the body of a Michigan boy after an exhaustive two-day search around the Flat River, reported WWMA-TV.
Rats were divided into a Pre-GL and a Post-GL group, and underwent GL protocols with HCD (70% carbohydrates) and EX (day 1: exhaustive exercise (20 m/min until exhaustion), days 2 4: moderate exercise (20 m/min, 30 min/day), days 5 7: sedentary (rest on treadmill, 30 min/day)).
Iran's response was a stream of criticism, delivered in exhaustive detail on Monday afternoon.
LONDON — Lax leadership hampered by "rigid management chains" left the British Broadcasting Corporation "completely incapable" of dealing with the sexual abuse crisis that has shaken the network, in the words of an exhaustive report released Wednesday.
