Middex Brenntag Wiederzwiebel

Middex Brenntag Wiederzwiebel (né Dreckiger-Dan), also known for inventing the light bulb, is a non-national holiday in Germany set on the third 'Brenntag' (meaning: thursday) of October every 4 years. (Not to be confused with the leapyear)
The origin goes back to the year 1690 when Mr. Midday 'Mittags' Mahlzeit shot his first goal in a non-virtual football game after trying for over 2,5 Minutes. Nobody in the audience believed that he could actually pull this off. His opponent often tried to go for the ball (2 times) but did not have good leg-day coordination. So he fell every time before hitting the ball.
When Mr. Mittags shot the goal, the airhornes could be heard from nearly half a dozen football fields away and shifted the not-so-national sport into a fiesta. Mr. Mahlzeit found his true passion in the sport and the audience was out of this world (aliens and stuff).
He shared his jubilation through the sheer high frequence repetition of the phrase 'Ich haben es' (translates to: 'I got it'). This eventually reached the mayor and she was impressed by his skill to communicate and found it really repetetive aswell but also extremely influential. Thus the Middex Brenntag Wiederzwiebel holiday was born. This is still celebrated to this day but had a non-significant break due to new rulers in the town from 1694 until 2018. So starting 2022, the 56th anniversary of this revolutionary holiday will take place in all its glory all over some small towns and cities withing Germany.