[Andy B]

Well you're just weird then. Obviously some kind of generic freak. Or maybe you've got weird calendars like they do in Ethiopia where they celebrated the millenium 5 years later than the rest of us.

[Munki Bhoy]

I'm almost positive you're wrong about this. You can't go seven years and not get bumped by a leap year. There's bound to be a mathematical proof for it, but I'm not sure what it is.

[Andy B]

I'm taking my birthday as a given on this one..........

[MK Chris]

What's your year of birth Andy?

[Bonanzoid]

If someone's born on February 29th, they technically must have a different birthday every year, surely? Or one every 4 years. Teehee.

[Munki Bhoy]

Example. Lets say you were born today - Friday 6th February 2009. Your birthdays would be as follows:

1st Birthday - Saturday 6th February 2010.
2nd Birthday - Sunday 6th February 2011.
3rd Birthday - Monday 6th February 2012.
4th Birthday - Wednesday 6th February 2013 (skips due to Feb 29th 2012)
5th Birthday - Thursday 6th February 2014.
6th Birthday - Friday 6th February 2015.

So you're six years old when it comes around again, not seven. We keep going:

7th Birthday - Saturday 6th February 2016
8th Birthday - Monday 6th February 2017 (skips due to Feb 29th 2016)
9th Birthday - Tuesday 6th February 2018
10th Birthday - Wednesday 6th February 2019
11th Birthday - Thursday 6th February 2020
12th Birthday - Saturday 6th February 2021 (skips due to Feb 29th 2020)
13th Birthday - Sunday 6th February 2022
14th Birthday - Monday 6th February 2023
15th Birthday - Tuesday 6th February 2024
16th Birthday - Thursday 6th February 2025 (skips due to Feb 29th 2024)
17th Birthday - Friday 6th February 2026

So from six you don't get back to the same day of the week for your birthday until you're seventeen!

Case closed, Munki wins.

[foot-loose]

I like a man who likes to be right.

[Console]

You can't go seven years and not get bumped by a leap year.

You can, although chances are that you wouldn't still be alive today. If you were born between 1st March 1896 and 28th February 1897, then seven years later your birthday would be on the same day as the day you were born.

After that, though, it would be bumped every four years (unless you lived to be over two hundred).

[Yudster]

I think that Andy B was born on 25 December 1978 (or a year either side of that). He says it was a Sunday, so Munki you could easily work out which year it was, it was around then sometime, and then do a list for Andy in the way that you did for yourself. Then you could see for sure one way or the other.

[Bonanzoid]

This is a (moderately) interesting debate, but why are we delving into such detail about it?

[Andy B]

I'm still bloody convinced all of my 7th birthdays have been sundays though (7th 14th 21st etc.....)

Oh and Yuds feel free to post my National security and bank account numbers while you're at it.......anyone need my mother's maiden name?

[MK Chris]

Your date of birth is hardly going to allow others to steal your identity - it's common knowledge your birthday is Christmas Day anyway, so it's only the year that people are left guessing and since you've told everyone you were born on a Sunday, and there have been photos posted that give a rough indication of your age, that narrows it down somewhat.

[Andy B]

But there's a difference in having to search for that kind of info and having it plastered there for all to see. I could probably work out your address with a little bit of detective work but I'm too lady to do it. On the other hand should someone post it on here then expect lots of irate pizza delivery guys and skip companies.

[Bonanzoid]

I'm too lady to do it.

Is that a confession?

[Console]

But there's a difference in having to search for that kind of info and having it plastered there for all to see. I could probably work out your address with a little bit of detective work but I'm too lady to do it. On the other hand should someone post it on here then expect lots of irate pizza delivery guys and skip companies.

There's also a difference between a birthday, which many, many people share, and an address which is personal to just a few.

[Yudster]

Oh don;t be ridiculous Andy - you mentioned loads of times that your birhtday is Christmas day, and you have also told loads of people your age (approximately). And as Topher said, you are the one who said you were born on a Sunday. Don't be so precious.

[S4B]

He is precious though. That's how you become an Andy B by being precious!

[Andy B]

What can I say. It's okay for me to slate Pompey but not for non Pompey fans to do it. Same thing applies. Fortunately I've a crap memory. It'll all be forgotten by tomorrow.

[Munki Bhoy]

You can't go seven years and not get bumped by a leap year.

You can, although chances are that you wouldn't still be alive today. If you were born between 1st March 1896 and 28th February 1897, then seven years later your birthday would be on the same day as the day you were born.

After that, though, it would be bumped every four years (unless you lived to be over two hundred).

Okay, Console wins. Munki close second.

[foot-loose]

Don't give into him Munki! He is basically going back to when the calendar was different which totally changes the rules.

[MK Chris]

No he's not - there's not strictly a leap year every four years... that's just the general rule. I had to write a routine that took into account leap years and there's lots of checking... I'm not sure I remember exactly, but if the year is divisible by four it's a leap year unless it's also divisible by 100. But if it is divisible by four and 100, it's still a leap year if it's divisible by 400. Or something like that.

[foot-loose]

Shut up.

[Munki Bhoy]

It's fine, as Console pointed out I was right unless you went back so far that you could reasonably assume it wasn't the case.

But even then, Console's example would only account for one 7 year gap between birthdays and not the Initial, Seventh, Fourteenth and Twenty-First birthdays. You can't possibly have all of those on the same day of the week, no matter when you were born.