As you already know, a year has 12 months; each month has 28-31 days which is a little more than 4 weeks; a week has 7 days; there are at least 52 weeks a year and 365 days.(366 on leap years) The year is based on the planet’s revolution around the Sun, and a day is a full 360-degree rotation of the planet; it rotates 15 degrees each hour. The month is based on the Moon’s revolution around Earth.  We use our planet’s movement to measure time; clocks & calendars are based on its current position in its orbit. The calendar we currently use today is called the Gregorian Calendar.

We have a name for each of the 12 months in this calendar: January, February, March, April, May, June, July, August, September, October, November, and December. However, if there are alien races as intelligent as we are, they must have calendars of their own! These alien calendars could be based on the movements of their planets, or something else perhaps! Their calendars could have more or less than 12 months, or their weeks could have more or less than 7 days, or their days could have more or less than 24 hours, or their months could have more or less than 29.5 days on the average, or their hours could have more or less than 60 minutes, et cetera.

Imagine if there were 36 hours in a day, instead of just 24. How would that affect a whole week? How would that affect a whole month? How would that affect a whole year? There are 60 minutes in an hour, and 60 seconds in a minute, making a total of 3,600 seconds in an hour, so there are 86,400 seconds in a day since a day is 24 hours; however, if a day was 36 hours long, then it would be a total of 129,600 seconds! The day would also have 2,160 minutes! With just 24 hours, there are 1,440 minutes in a day.

The aliens could have special names for their months, too, that are different from ours. If we had a 13th month on our Gregorian calendar, it would probably be called Undecember. Here’s why: the prefixes of the last 4 months of the year are related to numbers; Sept- in September means “seven”, Oct- in October means “eight”, Nov- in November means “nine”, and Dec- in December means “ten”. The prefix Undec- means “eleven” or “one plus ten”. Furthermore, there are many other number prefixes like Dodec- which means “twelve” or “two plus ten”; so a 14th month would probably be called Dodecember! If you know the prefix for “thirteen”, then I bet you can guess the name for a 15th month!

In conclusion, there could also be some alien races that use the same calendar as ours. Planets closer to their corresponding stars have shorter years. Whether their home planets are exactly 93 million miles away from their stars or not, the closer a planet is to a star, the faster it revolves. If we ever meet friendly, intelligent alien races, we could learn about their calendars and teach them about ours. In fact, we could learn how to convert time between their calendars and ours; it would be something similar to converting Farenheit to Celsius and vice versa in terms of temperature! 

A reused panel from the Blueworld Adventures cartoon entitled "Roach Bots". This is the part when the heroes return to their clubhouse realizing that they accidentally travelled into their world's future by staying in space for a while. Dr. Foolish points his open hand at the calendar which is 3 months behind. Obviously, these alien characters use the same calendar as ours: the Gregorian Calendar!