As the Earth is approximately 4,500,000,000 years old
I'm so glad you said "approximately". As hard as it tries to pinpoint the exact time of the big bang, very loud event, whatever, the scientific community simply doesn't have the 'ruler' to measure back that far. And even if it did, the lumps and bumps along the way [mountains and such stuff] would surely make the final calculation inaccurate.
More to the point, what makes the Gregorian Calendar any more accurate/correct that the Julien Calendar? Each was conceived at different times in different parts of the world, so therefore could only be accurate to the closest day, month, year to that particular time and position. Without a precise starting point, which is impossible without all the relevant data... and a long enough tape measure, neither calendar is correct.
who knows what year it actually is - maybe 4,498,362,217.
I'm more inclined to think it's closer to 4, 499,362,217 than 4,498,362,217... and that's because they left out all the public holidays mankind enjoyed up until the advent of 24/7 trading and fuckin' modern-day bankers... who calculate interest owed by the second of EVERY day. Yup, once we became a 24/7 society, weekends and public holidays were added to the equation, so employers could get you in on your day off... and the taxman could tax you for the full 365 days a year.
Still, irrespective of whether the calendar is accurate or not, I still dant the date to start with the day... then the month... then the year... cos then it takes that bit longer when reading my birth date, and it doesn't ruin the cellarbrations quite so soon.
Put the year first and my birthday is fucked up already. 
