Now when I told you that Rosh Hashanah is celebrated on two days, that means that it is celebrated on two days now. However, the second day is just an addition and is not from a literal reading of the Biblical commandments (which does state that the holiday should be celebrated on the first day and it says nothing about a second day). However, lots of people refer to Rosh Hashanah as Yoma Arichtah. This translates to one long day. So evidence even shows that Rosh Hashanah may have only been celebrated for one day in Jerusalem in the late thirteenth century. Do keep in mind that most people do celebrated Rosh Hashanah for two days, however, some people do only celebrate it for the one day (which would be the first day and not the second day at all). The Orthodox and Conservative Judaism, however, do celebrate both days. One group that does only celebrate the one day would have to be the Karaite Jews, because they do not accept the oral law, only the Biblical scripture. So thus they only celebrate the first day of Tishrei. This is because the second day is not mentioned at all in the Torah.
Not matter what kind of Jew you are or which way you choose to celebrate Rosh Hashanah (if you choose to celebrate it at all), it is cool to know that people all over the world have there very own New years party. That is something that I kind of like to think joins us in a world where we are all so different and believe in so many different things. However, as you can see, even a thing like when to celebrate a holiday is a hard choice for everyone to make, and we do not all do it at the same time. This is because we are all so different, and not everyone does things at the same time with everyone else. However, it is pretty cool to know that we do all have this type of holiday in one way or the other, and this lets us know that we are not all that much different from each other. So the next time you celebrate your New Years, be sure to think about Rosh Hashanah.