“Do not squander time for that is the stuff life is made of.”
Benjamin Franklin
"I've got too much (clap, clap) time on my hands / and it's ticking away, ticking away from me."
"Too Much Time on My Hands" -- song by Styx, 1981
Given that it is the beginning of another year, I figured it
would be appropriate to write my newest blog post about the development of the
calendar. I put this on my list of
topics a while ago when all the public furor began regarding our fiery death as
predicted by the Mayans. Since we dodged
that bullet, I figured I would take full advantage of being alive and do some
research about how we arrived at the calendar the western world follows. I can’t say that I knew the majority of what
I’ve learned, and I found a lot of interesting tidbits about how the months
were named, how leap years came to be, and why this is not 2013 in the eyes of
some people.
Beyond those historical and technical elements of the calendar,
I think time itself is a fascinating topic. The language of time is commonplace in
English. Some well-known idioms with regards
to time include:
- Better late than never
- Once in a blue moon
- Living on borrowed time
- Have the time of your life
- Time is money
But we also say things like, “I don’t have enough time” or
“If I had the time, I would” or “I’ve got all the time in the world.” Quite often, we use the word "time" in
sentences with the verb “have.” Looking at it from that perspective, time is
not just something that is, it’s something we own and control. We see time as a resource to be used, wasted,
or spent in a particular way. Along with
that consideration comes many other implications and pick-apart-able
ideas. J I think Franklin’s quote above gives a pretty
good idea of why we think so much about time – it truly is the stuff life is
made of, and how we use our time also is a clear commentary on who we are. The events, activities, and work that fill
all those little boxes of the calendar every year make up the substance of our
lives. And while no one wants to say
they’ve used their time poorly, so often, we are guilty of doing just
that.
What is it that makes wasting time
so easy and using it wisely so much more difficult? When did the concept of "time management" emerge and why? Why are we so obsessed with the world’s end
and how much time we have left? How have
our lives changed for better or worse because of the development of the
calendar? These are all questions to contemplate
as I start by giving you some background on how we keep track of how much time
we have each year. (And maybe start
thinking of some of your own – I love new questions I’ve never thought of!)
The Basic Set-Up of the Calendar
There are three types of calendars in the world: lunar,
solar, and lunisolar. Lunar years –
years based on the cycles of the moon – have 354 days, and solar years – those based
on the sun – have 365 days. The majority
of the world uses what is known as the Gregorian calendar and it is a solar
calendar. Despite the fact that we
follow a solar calendar, we don’t follow the definition of a solar
year to a T. We actually use something called “tropical
years”: 365.24219 days equal one year.
The fact that each year is 365.25 days long is why we do a leap year
every four years. Let me show you what I mean in math language.
[.25 of a day + .25 of a day + .25 of a day + .25 of a day = 1
whole day]
The long process of
developing this precise number will be discussed throughout this series of blog
posts. So, we continue on. J Islamic cultures use a lunar calendar. Because the lunar calendar falls short eleven
days every year (and twelve days in leap years), lunar calendars eventually end
up moving backwards through the seasons.
(I know that sounds weird, but think about it for a moment: over time,
eleven days can add up.) Lunisolar
calendars are based on…can you guess?...the sun and the moon. The major contributor to a lunisolar calendar
is the moon and its cycles, but every two or three years, cultures who use the
lunisolar calendar add a month, thus giving a nod to the solar calendar. The Chinese and Hebrew calendars are
lunisolar. (If this seems like a lot of
calendars to keep straight, just wait until you read the next sentence.) In all, there are approximately forty
different types of calendars in use today all over the world.
Now, if you’re anything like I am, you may be saying this to
yourself: “Besides those mildly entertaining placemats at my favorite Chinese restaurant that tell me it’s the Year of the Dog or the Year of the Dragon or whatever, I didn’t
know that different cultures still used different calendars.” I was really surprised to learn that even
though the Gregorian calendar is used world-wide for business and major world holidays,
the Muslims, Jews, and Chinese still follow their own yearly calendars. Some people still follow the precursor of the
Gregorian calendar, the Julian calendar.
What this means is that depending on which calendar you’re looking at, January
3 might not be January 3 and 2013 might not be 2013. Check out this chart I found in one of my
books:
Which calendar?
|
What year?
|
Based on what?
|
When is 2005’s New
Year’s Day on this calendar?
|
Gregorian
|
2005
|
Birth of Christ
|
January 1, 2005
|
Julian
|
2005
|
Birth of Christ
|
January 14, 2005
|
Islamic
|
1426
|
Flight of Muhammad
|
February 10, 2005
|
Chinese
|
4703
|
Legend
|
February 9, 2005
|
Hebrew
|
5766
|
Year of creation
|
October 4, 2005
|
Maybe now you’re wondering where all these calendars came
from and how they were developed. Well,
shucks…I’m so glad you asked.
Early “Calendars”
Before people chose whether they wanted gamboling puppies or
Maxim pinups gracing their monthly collection of numbered boxes, they simply ordered
their days based on their observations of the sun, moon, and stars. These celestial bodies all follow clear patterns. The sun rises in a new place every day over a
period of a year; the moon waxes and wanes every thirty days (give or take); and
there are certain stars that show up on the horizon pre-sunrise or post-sunset
at particular times of the year. All of
these patterns are a direct result of the Earth spinning on its axis. (Just as a quick review, the Earth spinning
once on its axis is the equivalent of a day, and the Earth traveling once
around the sun is the equivalent of a year.)
Paying attention to these natural repetitions in the sky – as well as
the yearly progression of seasons – helped early people figure out the best times
to plant and reap crops. Once people
realized that the same thing happened every year, they tried to create a
tangible record of the progression of days.
Archaeologists have found evidence of many types of early calendars: carved animal bones, stones arranged in a
particular pattern, clay tablets full of markings, and records of flood
patterns.
How Early Civilizations Dealt with the Calendar Issue
The Sumerians were
the first to create a calendar over 5000 years ago. They divided the year into days and the days
into hours and they were able to do this by using the moon and its cycles. One year was the equivalent of twelve lunar
months of thirty days apiece. (Using
your quick math skills, you can see that they only accounted for 360
days.) The Sumerians knew there was an
error somewhere because they recorded that the seasons were happening later and
later with each passing year.
According to my research, the Sumerians are considered an
older civilization than the Egyptians,
but not by much. In approximately 4000
BC, the Egyptians contributed to the development of the calendar by creating a
365 day year. However, they based the
calendar on the seasons and the flooding of the Nile rather than the moon. Their calendar had twelve thirty-day months
and they spent the last five days of the year feasting and celebrating.
By 2000 BC, the
Babylonians had improved on the Sumerian calendar by making each month
twenty-nine or thirty days and then throwing in another thirty-day month every
three years to compensate for the lost days.
This calendar continued for fifteen centuries!
The peoples of Asia dealt
with lost days in a similar manner. By
1000 BC, the Hindu calendar had twelve months and 360 days with an added leap
month every five years.
Finally, on another continent altogether, between the years
of 2000 BC and 1500 AD, those pesky Mayans
went a direction that no one else did.
Their year had eighteen months with twenty days each. This still left an extra five days, but the
Mayans believed they were full of evil omens.
I’m not exactly sure what that means or how the Mayans dealt with the
evil omens. Obviously, they were a
people who assumed the worst about things like extra days and calendars in
general.
***
As you might have guessed, it was the Romans who really got
things rolling in terms of a specific and empire-wide calendar. When you can find the time, come on back to
hear the continued story of the calendar.
There will be more to chew on next week!
LOVE IT. And I'm so glad you posted! Look forward to the next in this series! Bonus question: what day in every calendar currently used will that be? :-)
ReplyDelete