Collecting all the unique WarioWare website Under Construction pages

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Oops! Missed April Fools... Though I'd assume it'd be the same as last year.
 
While I haven't found the code that actually implements which day gets shown, I have found in the CSS file some events. I'll be leaving out the standard month days, whose internal names are all... well, the month in all lowercase letters.
All pictures for the events are stored at, for example, https://www.nintendo.com/jp/character/wario/en/assets/images/contact/mothers_day.png.
  • "april_fools_day" - Self-explanatory.
  • "valentines_day" - Self-explanatory.
  • "new_years_celebration" - See #11 on this thread.
  • "wario_joins_smash_bros_day" See #16 on this thread.
  • "garlic_day" - Unknown. This doesn't correspond to any holiday on Wikipedia, and I have no idea what specific day this could map to on the WarioWare side of things.
  • "greenery_day" - Japan's Greenery Day holiday. It'll happen on May 4, 2025, and every May 4 after that. Greenery Day - Wikipedia
  • "mothers_day" - Japan's version, I presume. It'll happen on May 11, 2025, and every second Sunday after that.
  • "jugoya" - Another name for Tsukimi. It'll happen on October 6 to October 9, 2025. Tsukimi - Wikipedia
  • "sports_day" - Japan's Sports Day holiday. It'll happen on October 13, 2025, and every second Monday of October after that. Sports Day (Japan) - Wikipedia
  • "vernal_equinox_day" - Vernal equinox. It'll happen on March 20, 2026. Strangely, there is no evidence of a "autumnal_equinox_day" or "fall_equinox_day".
  • "fathers_day" - Japan's version, I presume. It'll happen on June 22, 2025, and every third Sunday of June after that.
  • "marine_day" - Japan's Marine Day holiday. It'll happen on July 21, 2025, and every third Monday of July after that. Marine Day - Wikipedia
  • "mountain_day" - Japan's Mountain Day holiday. It'll happen on August 11, 2025, and every August 11 after that. Mountain Day - Wikipedia
This isn't every event unfortunately, as not every event has special CSS rules for it (note how Hinamatsuri is missing. Sorry, Kat.), but it should help finding which days to view the site on.
 
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This rather shouty Reddit post has archived Coming of Age Day, featuring everyone's favourite singer-scientist Penny. This one is called "coming_of_age_day" internally, and was what led to me decompiling the website to find the other internal names actually.
 
HI, Not sure what compelled me to go back to WarioWare for now.
I'm surprised they took effort to cycle the events on the forever-under construction Contact US page. I'd be thinking they'll stop supporting the site and shut it down before some of these events pop-up in rotation.

BTW. Garlic Day is April 19 which unfortunately wasn't captured on the Wayback Machine.

Jugoya and Mountain have been luckily captured by the Wayback Machine.
Jugoya.png

MountainDay - Copy.png


Greenery Day.
Greenery.png


Oh and Father's Day was already captured too.
Screenshot 2025-05-04 at 10-45-27 Contact Us WarioWare Inc. Official Site Nintendo.png


Wonder how many Japanese Holidays this page celebrates. I'm going to miss a lot.
Children's Day in Japan is tomorrow, so I think I should check back if there's something new tomorrow.

After so Wild Guessing by looking up holidays. There should be at least unique under construction pages for:
Shichi-Go-San. (Nov 15)
Setsubun (February 3) (Was this already listed?)
Respect for the Aged Day (About September 15)
Culture Day (November 3)
Labor Thanksgiving Day (November 23)
Childrens Day. Should at least be tomorrow.
 
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Children's Day indeed exists (internal name childrens_day).
2025-05-05.png


For posterity, here's what I saw for Greenery Day, the day before.
2025-05-04.png


I was able to corroborate the existence of these events, although not with their text:
https://www.nintendo.com/jp/character/wario/en/assets/images/contact/respect_for_the_aged_day.png Respect for the Aged Day
https://www.nintendo.com/jp/character/wario/en/assets/images/contact/setsubun.png Setsubun
https://www.nintendo.com/jp/character/wario/en/assets/images/contact/culture_day.png Culture Day
https://www.nintendo.com/jp/character/wario/en/assets/images/contact/labor_thanksgiving_day.png Labor Thanksgiving Day
https://www.nintendo.com/jp/character/wario/en/assets/images/contact/shichi_go_san.png Shichi-Go-San
 
Well, well, I've hit the jackpot. I've found the JSON file that defines all the event text. https://www.nintendo.com/jp/character/wario/assets/json/contact.json

Here's what I have gathered from it:
  • Each event has a month and day attached to it... but strangely, does not even attempt to emulate the variable days that many of the holidays can take place on. For example, Marine Day should take place on every third Monday in July, but instead the code hardcodes it to 21 July. I will update my original post with these hardcoded dates in due time.
    UPDATE: Scratch that, it seems contact.json is regenerated every year with the correct days for the current year; I thought it was meant to be static. Why don't they implement that in the JavaScript instead, I don't know, but there we go.
  • Thanks to this, we now know that Garlic Day only runs on 29 February; i.e. a leap year. That makes it by far the rarest event to occur, and we missed our last opportunity for the next three years.
  • The text is stored not only Base64 encoded, but also URL encoded. That means you'll have a fun time reading it even after the Base64 decode step, and Japanese text will definitely need to be URL decoded. (%20 is URL-speak for spaces, and %3F for percentages.)
  • We now know the last missing events: White Day/"white_day" (14 March) and the Japanese release anniversary for Mega Microgames/"company_foundation_anniversary" (21 March).
  • The JavaScript code that runs the events system is prefixed by a lovely message from Wario, complete with an ASCII poop (which breaks when looking at it in plaintext, for some reason). This comment is the only one to be translated to Japanese, interestingly (most comments, even in the Japanese main.js, are in English).
 
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