For some reason I thought a Volvo was a german car. Whatever. Make believe I didnt write volvo and instead it says “german made product”.
Regarding the 25th, it is because it takes several days from the solstice to realize the days are getting longer. If you told your time by the sun, would you be able to differentiate between 2 minutes? 🙂
Those who do not follow the adjusted calendar (gregorian?) (the Greek Orthodox Church as they are called) delay all celebrations by 8 days, they are still on the original calendar (Julian?).