occasional day vs back up day

Some examples from the web:

• I've wanted the occasional day in bed myself.
• I've wanted the occasional day in bed myself.
• I admit I've taken the occasional day off to recharge, but I hardly think it's fair.
• Even superman took the occasional 3-day weekend.
• I've been a successful actor for decades and even I have the occasional bad day.
• I've been a successful actor for decades and even I have the occasional bad day.
• Even Superman took the occasional 3-day weekend.
• I think I'm entitled to the occasional bad day.
• An occasional date on his days off.
• We need the 12-day rule for occasional cross-border coach services.
• Representatives of the industry and trades unions have recently agreed a deal on the key issue of the "12 day rule" for occasional cross-border services.
• I get the occasional grunt on mother's day.
• Certainly, these days, there must have been an occasional cause that aggravated his illness.
• Visible injection site swellings may develop in up to 45% of treated animals associated with occasional, slight pain evident for one day.
• A recent study suggests that having employees complete occasional altruistic tasks throughout the day increases their sense of overall productivity.
• A recent study suggests that having employees complete occasional altruistic tasks throughout the day increases their sense of overall productivity.
• Finally, but very importantly, Council has made no progress on postponing rest periods for drivers on occasional international services (12 day rule).
• After one day, one of the vessels is equilibrated for 24 hours at the test temperature with occasional shaking.
• Okay, maybe back in the day I moved the occasional undocumented stone.
• Representatives of industry and trade unions on 21 May 2008 agreed a deal on the key issue of the "12 day rule" for occasional cross-border services.

Some examples from the web:

• When they knocked him out, he needed something to perk him back up during the day.
• But first, let's back up a few days.
• But if you hit rewind, you can go back up to three days.
• Look, I've only been back up there a day, okay?
• This is why signed up back in the day.
• We just got back from three days up at the Indian casino, that Foxwood place?
• And so we walked back up to the mountain two days later.
• And I started looking at how we could build battery back-up systems that could give people five hours, 10 hours, maybe even a full day, or three days' worth of back-up power.
• Three days after I'm gone, I'll come back up through the basement and get you out.
• But the days of breaking down a man and building him back up into a Marine are gone.
• Isn't every day the Blood Brothers get to hit someone who gets back up again.
• Killing on clinical grounds has been practised from the very beginning but was formalised on 15 March when up to 50 new outbreaks per day threatened to overwhelm the capacities of both the veterinary services and their laboratory back-up.
• After 3 days, the servers were back up, and most of the backups restored, so the site worked perfectly.
• We are just trying to find someone who can back up Alison's story and prove that she wasn't in Rosewood that day.
• Based on our back-up files, these changes were made two days ago, sometime between 11:10 and 11:14 at night.
• I remember being home that day, and wondering why this car was driving down our driveway, and just driving back up.
• On off days, I would go to the arena for the strange pleasure I could produce by flipping down every one of the 10,000 seats, admiring them, then flipping them all back up again.
• So you're still using the grid potentially, in this type of application, to be your back-up supply - of course, you can't use these at night, and you can't use these on cloudy days.
• Was I supposed to sit on my porch, knitting, hoping one day you'd show back up?
• A single egg won't sustain a hungry tadpole for long, so every few days, she has to climb back up to each youngster... and do it all over again.