Ok i have one no sniggering working on an ecom site and there are seasonal pages. What code do i serve when these pages come down?

Selected answers from the Dumb SEO Questions Facebook & G+ community.

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  Tim Capper: Hi Chaps.
  
  Ok i have one no sniggering working on an ecom site and there are seasonal pages ( valentines, mothers day, easter etc) .
  
  What code do i serve when these pages come down.
  
  1.2.3 ....
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  Andy Wigglesworth: Valentines = ;402 Payment Required
  
  Mothers day = ;418 I'm a teapot ;
  
  Easter = ;422 Unprocessable Entity
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  Tim Capper: Cheers Andy lol
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  Andy Wigglesworth: heh, no probs mate :)
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  Dewaldt Huysamen: I would just do a custom 404 error page for those pages and make it interesting and theme related for each with subscribe to next year season specials and get to know first.
  
  That way your user experience as well as on site seo wins and of course possible sales next year.
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  Dave Elliott: Id make a splash/landing page for each seasonal event and then 30 umm 2 I guess, to the new theme page.
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  Dewaldt Huysamen: I was under the impression +Tim Capper meant seasonal pages to come and when done and come down.
  
  But if the site has existing pages I would still do what I suggested but i also agree then create permanent seasonal landing pages, 301 and when out of season give people ability to sign up for next year seasonal special and get 10% discount.
  
  The best working site is getting past clients to always come back for more.
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  Federico Sasso: 200 OK and
  <meta name="robots" content="unavailable_after: 14 Feb 2014" />
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  Richard Hearne: Why not create URLs for each that are re-used every year?  ;They're all annual events, and any link love would stay in place year-to-year.
  
  Leave them up there, and just remove the internal navigation when not needed.  ;
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  Micah Fisher-Kirshner: I'm with +Richard Hearne on this one, well, after +Andy Wigglesworth's that is.
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  Tim Capper: Love it, Thanks Guys.
  
  Really appreciate the input
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  Dewaldt Huysamen: I think with a combo of all inputs here we just wrote a new standard guide
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  Dave Elliott: Didn't know about that tag +Federico Sasso ; that is more than a little useful!
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  Richard Hearne: Be careful using unavailable tags on URLs that don't actually expire.  ;If you do want to re-use URLs then don't mix that tag in would be my advice.
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  Federico Sasso: +Dave Elliott ;not sure it's that useful, I never had the chance to employ: normally one doesn't know in advance when the page offer expires (e.g. sell announcements).
  And I second +Richard Hearne ;on not wasting link assets (even if I'm not sure how much benefit they could give to a page returning thin content for nearly one year).
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  Dave Elliott: I could have used it for a few things in the past. Things like competitions and time sensitive promotions.
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  Richard Hearne: +Federico Sasso ;no reason for it to be thin.  ;Ideally you build a great landing page experience, and simply take down the offers/CTAs when you're not running those campaigns for rest of year.  ;Leave most of the content there all year round :)
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  Tim Capper: Thats how i understood it.
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  Dewaldt Huysamen: The amount of comments on here makes this post more popular than SA case on sat tv about Oscar Pistorius 
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  Tim Capper: Oscar who .... ?  ;LOL
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  Jim Munro: I have used the unavailable-after tag and think it's a dangerous weapon to play with. It's function is to drop a url from the index after a specified date. It does that as long as the page is crawled prior to the date but removing the tag prior to the date might not stop the url being removed. Urls that were dropped once did not ever really rank again even without the tag. I tried to use it for site management but I wish I hadn't.