An I have been asked, by those interested parties, to explain the rules of one of my greatest inventions, the Birthday Week. I am firmly of the opinion that a birthday should be celebrated and not just the day, but you should be treated for a period around your birthday. The name "Birthday Week" is a slight misnomer as it doesn't necessarily last a full week, it depends on what day your birthday falls (much like the "Royal Mile" isn't actually a mile in length or a "light year" does last a full year... ;-) FWIW if I had my way everyone would get their birthday as a day off work each year.
During your Birthday Week you are like a child again: get to choose what happens, where you go, what you eat and when it all takes places. You are not a dictator but treated like a prince or princess for that time. If you fancy something then why not, it's your Birthday Week. A normal Birthday Week lasts 5 days, although it could on rare occasions be as long as 6 or as little as 4. It starts 2-3 days before the big day and runs 1-2 days afterwards. This can vary depending on what milestone it is and when exactly it is in the year (if it clashes with anything else).
If your birthday lands on a Monday then probably it would run from the Friday before through to the Tuesday (just one day after). By then you should have had more than enough time celebrating and turning into your next year. A Tuesday birthday could plausible start on the Friday and run to the Wednesday. Wednesdays are interesting as you would start on the Monday and then run through to the following Saturday, although in this case you are celebrating more after the event. Thursdays would probably do similar, although start on the Tuesday and Fridays most likely start back on the Wednesday and run through to Sunday. Weekend birthdays usually start on a Thursday and end on the Monday, again depending on how important the year is.