mar a day vs spoil a day

Some examples from the web:

• In those days, Mars was just a dreary, uninhabitable wasteland.
• The wedding was held on a brisk summer's day on Mars.
• It's actually a wind-chill factor which is lower than a summer day on Mars.
• The sun sets on Mars' gloomiest day.
• I WROTE "DUCE" IN THE SAND Every day Mars comes up with a new joke to torment our heroes.
• If you happened to be on Mars when this impactor hit, it was a really bad day on Mars.
• So few people can boast they've lost a flying saucer and a man from Mars all in one day.
• By the way, how's Mrs. Mars these days?
• Now, we're going to be going to Mars one day. And when we do, it's going to be unfair for the people that are living there to have to live with these ridiculous names.
• BUT MARS CONJUNCT NEPTUNE THE DAY BEFORE WE FOUND OUR FIRST VICTIM, SHYLA.
• the Republic of Hungary the twenty-sixth day of Mars in the year two thousand and three,
• The Mars Express spacecraft recently revealed that the Red Planet has been ravaged at least five times by episodes of catastrophic volcanism, giving Mars a unique complexion, unlike anything else in the solar system.
• Would you call the last manned mission to Mars a success?
• We were roommates for a day.
• I even floss twice a day.
• 23 hours a day under constant surveillance.
• Russia wasn't conquered in a day...
• Twice a day for four weeks.
• - Guy threatened to bail twice a day.
• Ten thousand million pounds a day turnover.

Some examples from the web:

• She cannot spoil a splendid day.
• We can't spoil such a lovely day by worrying about that girl.
• Yes. Nothing like a headache To spoil a perfectly nice first day in prison.
• That lifeless cake pervert always spoils the day.
• 'I'm about to spoil your day, PC Rocksavage.
• For nothing on earth is going to spoil this day.
• Don't let the robbery spoil your day.
• Sorry to spoil your day of rest.
• Yes, I'm so sorry to spoil your day.
• Don't spoil this day for me, son
• I was determined not to let my mother spoil my day.
• Why do you have to spoil this day?
• Don't spoil my mum's day.
• NO. I DON'T WANT TO SPOIL HIS DAY.
• I only have one meal a day, and I'd rather hate to spoil it.
• Hate to spoil a party, but we got to talk.
• I don't want to spoil a beautiful memory.
• You do know how to spoil a moment.
• You really know how to spoil a good time.
• I wouldn't let it spoil a nice dinner.