set out to vs Whether day or night

Some examples from the web:

• I've accomplished everything in this sport I set out to accomplish.
• I didn't set out to give new talented cameramen a chance.
• I have destroyed everything I set out to protect.
• Believe me, I did not set out to cheat on maria.
• He didn't set out to forgive a massive parcel of debt.
• I never set out to take her off you.
• I set out to uncover exactly that.
• The Commission proposal does not set out to fundamentally change the provisions of the current regulation.
• Dwight set out to reclaim the mysterious timepiece one last time.
• Their active immune systems set out to attack the virus.
• Bad luck Barry set out to get his revenge.
• I'm doing what we set out to do.
• I have destroyed what I set out to defend.
• Page always did whatever she set out to do.
• You did what you set out to do.
• We forced him when the company of Thorin Oakenshield set out to reclaim... their homeland.
• The regulation does not set out to regulate the entire area of non-contractual obligations.
• Marshall and Lily set out to watch Sleepless in Seattle.
• So, they set out to find a new apartment to rent.
• My own brother purposefully set out to hurt me.

Some examples from the web:

• Window's so filthy, can't tell whether it's day or night out there.
• "Grace could no longer determine whether it was day or night."
• Our Ae Ra... after separating from you, trying to repay all the debts, she worked not knowing whether it was day or night!
• Whether it's day or night the sun is the most important star
• And I'm never sure whether it's day or night But at least I don't have to worry about my sleeping problem anymore
• It is obvious that animals subjected to invasive procedures may require care (whether veterinary or otherwise) at any time of day or night.
• At any time, day or night.
• Feel free to contact me anytime, day or night.
• Feel free to contact me anytime, day or night.
• If it was day or night.
• No idea when it's day or night.
• No, this is a first for me, day or night.
• You, day or night, stay alert.
• Day or night, I'll pick up.
• Knock on my door day or night.
• Family and friends are welcome day or night.
• Suicide can be prevented, and help is available day or night.
• Call me anytime, day or night.
• 24 hours, day or night.
• The parole system can call you any time, day or night.