"wretched day" is correct and usable in written English.
You can use it to describe a day that was particularly bad or difficult. For example, "It was a wretched day filled with disappointment and bad news."
It's been a wretched day for the Open champion who is +6 for the day.
A wretched day for Redknapp's team concluded when Portsmouth scored again three minutes from the end.
A wretched day for England, a joyous one for beleaguered Bangladesh.
I had been forced to sit out on the fun and games because of a twisted ankle, and spent a wretched day getting colder and colder while my French pals swooshed around.
But, rebellion or not, today has been a wretched day for Cameron, because the events in the Commons illustrated the extent to which he has lost control of his party on this issue.
He was back for only the second time since an ocean of tears were spilled on that wretched day in 1993 when he bowed out with his beloved Forest falling out of the Premiership.
We thank the Zune team for ridding the wretched three day play rule, but they left the three play rule and that makes us cringe.
Back in the old days, Brooklyn Dodgers fans were wretched only one day a year.
Sure, alcohol makes us feel wretched the next day, but at the time it's great!
The one whose work was saddest to contemplate was Julia Roberts, briefly as herself in the wretched Valentine's Day, but in every scene of the toe-curlingly awful Eat Pray Love.
After years at the pinnacle of his career, Tom Brady's wretched play in Monday night's game confused viewers.
