Have you noticed that there are bunch of times when you are just flooded with birthdays of people you know in the year. The most prominent ones are in the Nov-Dec period, last week 2 weeks of November and first week of Dec, and a similar occurrence in the last week of may and first 2 weeks of June. Now am just theorizing here, humor me if you will, possible theories: 1. Zodiac sign 2. Social Ladder 3.Valentine babies 1. Zodiac sign: well we all know that zodiac sign says about you being compatible and not with certain zodiacs but then there are always aberrations which more or less disprove this theory because of the sheer #s. 2. Social Ladder: now this is just a theory, the people whose birthday is in the rush periods, are more social ones and are prone to have traveled a lot more and know a lot more people and hence put themselves on the upper rungs of the social ladder. 3. Valentine babies: Birthdays are more or less based on the human behavior, so the ones born in the Nov-Dec ...