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originally posted by: DISRAELI
a reply to: neutrinostargate
Frankly, I don't see the point.
The leap years are a necessary part of matching the calendar with the "natural" calendar of the earth's orbit around the sun.
"What the date would be if there were no leap years" is just an oddity without any particular significance. The LA Times had no other reason for putting it forward.
originally posted by: kitzik
a reply to: neutrinostargate
Let me spare your time and point you to this page www.famsi.org...
The Goodman-Martinez-Thompson's correlation constant is the JDN of its start date, 13.0.0.0.0. According to their calculations (based on cross-checking several Maya colonial documents) the GMT constant is 584,283. That is, add 584,283 days to 1st of January 4713 BC (Julian) and you arrive at 6th September 3114 BC (Julian), which correlates to 11th August 3114 BC (Gregorian), the calendar in use today. (The reason Julian and Gregorian are a little out of step has to do with their different leap year formulas. Look it up.) This correlation leads one to 21st December 2012 for the next 13.0.0.0.0.
I'm not an expert in Mayan calendar, you can use google and find out exactly specifics of Goodman-Martinez-Thompson model correlation.
I know it took you a long time to realize the fallacy of your original claim, but I hope that checking GMT theory will not take you more time till the next Mayan long count will expire
But the Mayans didn't use a Gregorian calendar. They didn't care about leap years. They didn't care if the seasons drifted over time or if a white Christmas was summer at some point.
originally posted by: kitzik
a reply to: neutrinostargate
But the Mayans didn't use a Gregorian calendar. They didn't care about leap years. They didn't care if the seasons drifted over time or if a white Christmas was summer at some point.
And you think you are the first in the world to realize this ? Lol
I'm certainly don't have the patience like Disraeli, I found for You one of the most authoritative site on the web about Mayan calendar where to start. The rest is up to you
"They also created a huge time-cycle, built of smaller cycles. That cycle was 5,128 years long. And the turning point, if you will, when the midnight of that clock happens, is on December 21, 2012, the winter solstice. The beginning was on August 11, 3114 BC. So, yeah, that cycle is coming to an end."
Um, the GMT correlation has to do with figuring out the beginning date. Not going to get into the logistics how they arrived at it. This explains it here:
The problem is researchers threw out the Mayan Haab solar year, threw in the Gregorian solar year and arrived at 12/21/21 or 1,872,000 days later. That is 5125.36 years or 5125 years 132 days.
originally posted by: kitzik
a reply to: neutrinostargate
Um, the GMT correlation has to do with figuring out the beginning date. Not going to get into the logistics how they arrived at it. This explains it here:
Again, I advice you to read the "logistics" or at least to read thoroughly your own reference
The term 584283 correlation comes from the formula Thompson employed to arrive at the date August 11, 3114 BC. The number 584283 is the number of days one has to count from Julian Day Number 0 to arrive at August 11, 3114 BC. The Julian Day Number System, not to be confused with the Julian Calendar, was established by Joseph Justus Scaliger in the 16th Century, specifically to correlate non-western calendar dates. In order to accommodate the most ancient calendars known at that time, he arbitrarily began the JDN count at Greenwich, at 12 o'clock noon, on January 1, 4713 B.C.
I'm not an expert, it is pretty complicated thing all those Mayan correlations, all I'm saying that a lot of hours of research was put on it. The trivial error like you are suspecting would be surely caught and not go unnoticed.
The problem is researchers threw out the Mayan Haab solar year, threw in the Gregorian solar year and arrived at 12/21/21 or 1,872,000 days later. That is 5125.36 years or 5125 years 132 days.
The problem is they didn't just "threw" it in, read the details mate.
"Okay, deep breath.... Mayan calendar. The Mayan calendar as we understand it correlates to a base date of either 2nd or 13th of August, 3114bce depending on your source. I'm using the latter as it appears to be more commonly accepted from what I can tell. A Mayan world age lasts 13 Baktuns, a period of 1,872,000 days. Therefore 22nd December, 2012 must necessarily be the 1,872,001st day after the Mayan base date. Unfortunately though, it doesn't quite work out. The sum of 1,872,000 days after the base date calculated without compensating for either Mayan intercalary days or Gregorian leap years represents a period of 5,128 years and 280 days bringing us to the 19th May, 2015. The sum of 1,872,000 days excluding Mayan intercalary days (thus preserving the mathematical integrity of the same) but including related systems within both Julian and Gregorian calendars represents a period of 5,312 years and 102 days bringing us to 19th August, 2019. The sum of 1,872,000 days including Mayan intercalary days as thogh they were a part of the calendar (which they patently were not) and related systems within both Julian and Gregorian calendars represents a period of 5,125 years and 94 days bringing us to 15th November 2011. I have no idea where 2012 came from. I guess some clever [cough cough... person] just pulled it out of their [cough cough... imagination] one day."
5128 years/4.123 years for 1 Gregorian leap year = 1244 days or 1245 days including this year
That would mean that on Dec. 21st, 2012 you have to add 1245 days since the Mayan calendar didn't include leap years.
originally posted by: kitzik
a reply to: neutrinostargate
5128 years/4.123 years for 1 Gregorian leap year = 1244 days or 1245 days including this year
That would mean that on Dec. 21st, 2012 you have to add 1245 days since the Mayan calendar didn't include leap years.
You are wrong. GMT correlation 584283 counting days using JDN. Julian Day Number.
Quote from the article www.mesoweb.com... which I have already pointed before.
A Long Count date is similar to a Julian Day Number
in that both record the number of days elapsed from a
base date. The Long Count 11.16.13.16.4 records what
has been termed a “Maya Day Number” of 1,704,204
days since 13.0.0.0.0 4 Ajaw 8 Kumk’u, as follows:
11 Bak’tuns = 1,584,000 days
16 K’atuns = 115,000 days
13 Tuns = 4,680 days
16 Winals = 320 days
4 K’ins = 4 days
1,704,204 days
Given that the Julian Day Number for July 16, 1553, is
2288488, Thompson’s initial calculation arrived at the
following result:
2288488 Julian Day Number
- 1704204 Maya Day Number
584284
JDN algorithm is the same like from your calculator www.msevans.com...
More details about JDN here en.wikipedia.org...
"Whereas, our Gregorian calendar first implemented by Pope Gregory XIII in 1582 A.D. figures the solar year at 365.2425 days (a correction of the Julian calendar figure of 365.25 days), the ancient Maya had calculated their Haab calendar's solar year to be more accurate at 365.2422 days. The great irony here being, it was the combined powers of the Roman Catholic Church authority and the Spanish monarchy who had waged a war of cultural genocide against the natives of Mesoamerica for being the suspect of inferiority; when in fact, many of their mindsets and understandings were centuries ahead of the 16th Century Europeans. Likewise, while our modern world continues to use the calculations of Papal Rome, as of January 1, 2000, our best trained astronomers recently recorded the mean tropical year at 365.2421897 days, which has now put us on par with what the ancient Mayans had already known.
Like all solar calendars of every advanced civilization that has come to develop one, there are certain basic similarities; such as, a need to keep track of the seasons for agriculture, and one perplexing problem which has always existed through the ages. Because the actual length of time it takes for our Sun to re-appear in its exact same positions as seen from Earth is slightly longer than 365 days, periodic adjustments are needed to keep an accumulation of the yearly calendar counts in alignment with the Earth's true revolutions around the Sun. The ancient Mayans approached this problem differently than what we do today. Instead of adding a leap year every 4 years, they subtracted 13 days every 52 years. The Haab calendar has an error of only 1 day in 6729 years, while our modern calendar has an error of just 1 day in 3236 years."
"13 Days Behind Today Currently (1901–2099), the Julian calendar is 13 days behind the Gregorian calendar. Today's Gregorian calendar uses more accurate leap year formula, making it far more accurate than the Julian. However, it is not perfect either. Compared to the tropical year, it is off by one day every 3236 years."