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Hello GHMB,

What I have been calling the Giza Grid cycle of 99 Lunar months is actually known by a different name than the Metonic cycle called the Octaeteris cycle as mentioned in this Wiki article:

[en.wikipedia.org]

This cycle of the Moon has been known for countless millennia by many ancient cultures as the article states, and was utilized by the Greeks to compute the Olympic games among other events. And even though both the integer count of this cycle into 99 mos of 29.53125 days is imprecise, as well as the Sothic 4 Year cycle of 1461 days, there does appear to be an adjustment ratio factor which brings this cycle extremely close to the current know value of the Lunar Synodic cycle of 29.5306 days. This ratio is 1837/1836. Now I have been examining the divisor of this ratio 1836, in a few contexts already as it is a multiple / 32 = 57.375 Radian SOL, calculation. But in this application, I shall demonstrate how this particular ratio brings both inaccuracies of the Lunar and Solar cycles of the Egyptian acct. system into precision. Starting with the basics, 99 x 29.53125 day LM, / 365.25 JY = 8.00436345 Yrs. This figure is in excess of an integer number of JY, by the close ratio x 1836/1837 = 8.00006148 JY. Then using this value multiplied by not the Julian, but the more precise Gregorian Calendar cycle 365.2425 days. = 2921.942245 day Octaeteris cycle. Such that when I divide this value by 99 Lunar Months = 29.51456814 days, I get a diminished value of the Lunar Month. But when I then multiply this figure by the aforesaid 1837/1836 ratio, I get 29.53064361 days. Synodic Month. Well, don't that beat all including my former precision calculation of the Luni/Solar cycle using the cube rt. 1892 value I posted previously in the subtopic heading Lunar Target Practice. This being a mere 4.63 seconds off the modern value.

Best regards,

Stephen

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Let there be Phos :) 2584 magisterchessmutt 16-Dec-17 03:08
Re: Let there be Phos :) 413 magisterchessmutt 16-Dec-17 14:12
Re: Let there be Phos :) 435 drew 17-Dec-17 02:30
Re: Let there be Phos :) 301 magisterchessmutt 17-Dec-17 14:17
Re: Let there be Phos :) 400 Sirfiroth 17-Dec-17 21:38
Re: Let there be Phos :) 341 magisterchessmutt 17-Dec-17 22:29
Re: Let there be Phos :) 399 Horatech 18-Dec-17 06:12
Re: Let there be Phos :) 308 magisterchessmutt 18-Dec-17 14:03
Re: Let there be Phos :) 422 Horatech 18-Dec-17 23:27
Re: Let there be Phos :) 347 magisterchessmutt 19-Dec-17 02:49
Re: Let there be Phos :) 318 molder 19-Dec-17 05:00
Re: Let there be Phos :) 336 Horatech 19-Dec-17 06:19
Re: Let there be Phos :) 325 magisterchessmutt 19-Dec-17 06:25
Re: Let there be Phos :) 336 molder 19-Dec-17 07:11
Re: Let there be Phos :) 404 magisterchessmutt 19-Dec-17 11:56
Re: Let there be Phos :) 327 Sirfiroth 19-Dec-17 19:32
Re: Let there be Phos :) 383 magisterchessmutt 20-Dec-17 03:00
Re: Let there be Phos :) 296 Sirfiroth 20-Dec-17 16:03
Re: Let there be Phos :) 325 magisterchessmutt 21-Dec-17 06:22
Re: Let there be Phos :) 291 molder 19-Dec-17 22:08
Re: Let there be Phos :) 326 magisterchessmutt 20-Dec-17 02:08
Re: Let there be Phos :) 321 molder 20-Dec-17 20:57
Re: Let there be Phos :) 348 magisterchessmutt 22-Dec-17 02:33
Re: Let there be Phos :) 315 magisterchessmutt 22-Dec-17 04:23
Re: Let there be Phos :) 334 mmstud 22-Dec-17 08:12
Re: Let there be Phos :) 345 magisterchessmutt 22-Dec-17 10:44
Re: Let there be Phos :) 322 mmstud 22-Dec-17 12:26
Re: Let there be Phos :) 419 magisterchessmutt 23-Dec-17 00:47
Re: Let there be Phos :) 454 magisterchessmutt 24-Dec-17 15:20
Re: Let there be Phos :) 407 magisterchessmutt 24-Dec-17 04:07
Re: Let there be Phos :) 344 drew 18-Dec-17 00:51
Re: Let there be Phos :) 352 magisterchessmutt 18-Dec-17 02:11
Re: Let there be Phos :) 458 mmstud 22-Dec-17 14:44
Re: Let there be Phos :)Doubling a cube 427 molder 22-Dec-17 21:21
Re: Let there be Phos :)Doubling a cube 475 molder 23-Dec-17 22:27
Re: Let there be Phos :)Doubling a cube 380 magisterchessmutt 24-Dec-17 01:55
Re: Let there be Phos :)Doubling a cube 393 magisterchessmutt 26-Dec-17 14:53
Re: Let there be Phos :)Doubling a cube 319 molder 26-Dec-17 21:51
Re: Let there be Phos :)Doubling a cube 336 magisterchessmutt 27-Dec-17 03:36
Re: Let there be Phos :)Doubling a cube 322 molder 27-Dec-17 05:02
Re: Let there be Phos :)Doubling a cube 366 magisterchessmutt 27-Dec-17 11:07
Re: Let there be Phos :)Doubling a cube 360 rodz111 29-Dec-17 22:44
Re: Let there be Phos :)Doubling a cube 287 Sirfiroth 28-Dec-17 18:28
Re: Let there be Phos :)Doubling a cube 375 DavidK 28-Dec-17 19:33
Re: Let there be Phos :)Doubling a cube 381 magisterchessmutt 29-Dec-17 02:42
Re: Let there be Phos :)Doubling a cube 421 Sirfiroth 29-Dec-17 14:27
Re: Let there be Phos :)Doubling a cube 359 DavidK 29-Dec-17 15:05
Re: Let there be Phos :)Doubling a cube 379 magisterchessmutt 29-Dec-17 01:37
Re: Let there be Phos :)Doubling a cube 440 DavidK 29-Dec-17 01:52
Re: Let there be Phos :)Doubling a cube 501 magisterchessmutt 29-Dec-17 03:04
Re: Let there be Phos :)Doubling a cube 295 molder 31-Dec-17 22:57
Re: Let there be Phos :) 426 cladking 28-Dec-17 20:36
Re: Let there be Phos :) 365 magisterchessmutt 29-Dec-17 01:47
Re: Let there be Phos :) 357 cladking 29-Dec-17 02:06
Re: Let there be Phos :) 338 cladking 29-Dec-17 23:02
Re: Let there be Phos :) 472 DavidK 29-Dec-17 10:51
Re: Let there be Phos :) Lunar Target Practice 369 magisterchessmutt 30-Dec-17 03:24
Re: Let there be Phos :) 404 DavidK 29-Dec-17 15:22
Re: Let there be Phos :) 363 magisterchessmutt 30-Dec-17 04:28
Re: Let there be Phos :) 440 DavidK 30-Dec-17 15:56
Re: Let there be Phos :) 321 magisterchessmutt 31-Dec-17 05:32
Re: Let there be Phos :) 441 DavidK 31-Dec-17 10:28
Re: Let there be Phos :) 369 magisterchessmutt 31-Dec-17 12:18
Re: Let there be Phos :) Lunar Reflections 384 magisterchessmutt 01-Jan-18 11:07
Re: Let there be Phos :) Lunar Reflections 399 DavidK 01-Jan-18 11:40
Re: Let there be Phos :) Lunar Reflections 375 magisterchessmutt 01-Jan-18 13:00
Re: Let there be Phos :) Lunar Reflections 364 DavidK 01-Jan-18 13:39
Re: Let there be Phos :) Lunar Reflections 359 magisterchessmutt 02-Jan-18 04:12
Re: Let there be Phos :) Lunar Reflections 406 DavidK 02-Jan-18 09:34
Re: Let there be Phos :) Lunar Reflections 331 magisterchessmutt 02-Jan-18 12:30
Re: Let there be Phos :) Lunar Reflections 442 DavidK 02-Jan-18 13:20
Re: Let there be Phos :) Lunar Reflections 322 magisterchessmutt 03-Jan-18 03:57
Re: Let there be Phos :) Lunar Reflections 291 molder 03-Jan-18 06:00
Re: Let there be Phos :) Lunar Reflections 283 magisterchessmutt 03-Jan-18 07:04
Re: Let there be Phos :) Lunar Reflections 427 molder 03-Jan-18 08:47
Re:A Canonical alternative 370 cloister 03-Jan-18 10:14
Re: Re:A Canonical alternative 297 magisterchessmutt 03-Jan-18 11:16
Re: Re:A Canonical alternative 298 molder 03-Jan-18 11:46
Re: Re:A Canonical alternative 284 magisterchessmutt 03-Jan-18 12:18
Re: Re:A Canonical alternative 326 molder 03-Jan-18 12:34
Re: Re:A Canonical alternative 292 magisterchessmutt 03-Jan-18 13:19
Re: Re:A Canonical alternative 318 cloister 03-Jan-18 15:20
Re: Re:A Canonical alternative 299 magisterchessmutt 03-Jan-18 16:55
Re: Re:A Canonical alternative 404 cloister 05-Jan-18 17:23
Re: Re:A Canonical alternative 303 Origyptian 06-Jan-18 18:14
Re: Re:A Canonical alternative 301 magisterchessmutt 08-Jan-18 04:45
Re: Re:A Canonical alternative 371 cloister 08-Jan-18 11:25
Re: Re:A Canonical alternative 346 DavidK 03-Jan-18 15:37
Re: Re:A Canonical alternative 317 magisterchessmutt 03-Jan-18 17:31
Re: Re:A Canonical alternative 362 DavidK 03-Jan-18 18:54
Re: Re:A Canonical alternative 307 magisterchessmutt 04-Jan-18 03:04
Re: Re:A Canonical alternative 430 DavidK 04-Jan-18 09:55
Re: Re:A Canonical alternative 269 magisterchessmutt 04-Jan-18 11:20
Re: Re:A Canonical alternative 347 DavidK 04-Jan-18 11:55
Re: Re:A Canonical alternative 436 magisterchessmutt 04-Jan-18 12:13
Re: Re:A Canonical alternative 330 Sirfiroth 07-Jan-18 00:00
Re: Re:A Canonical alternative 360 magisterchessmutt 07-Jan-18 00:46
Re: Re:A Canonical alternative 312 magisterchessmutt 07-Jan-18 07:41
Re: Re:A Canonical alternative 371 cloister 07-Jan-18 09:07
Re: Let there be Phos :) 340 magisterchessmutt 07-Jan-18 16:12
Re: Let there be Phos :) 393 DavidK 07-Jan-18 18:28
Re: Let there be Phos :) 373 magisterchessmutt 07-Jan-18 22:43
Re: Let there be Phos :) 380 DavidK 07-Jan-18 23:09
Re: Let there be Phos :) 373 DavidK 07-Jan-18 23:53
Re: Let there be Phos :) 328 magisterchessmutt 08-Jan-18 03:37
Re: Let there be Phos :) 336 magisterchessmutt 08-Jan-18 04:05
Re: Let there be Phos :) 335 DavidK 08-Jan-18 08:25
Re: Let there be Phos :) 311 magisterchessmutt 08-Jan-18 10:28
Re: Let there be Phos :) 337 DavidK 08-Jan-18 10:59
Re: Let there be Phos :) 285 DavidK 08-Jan-18 11:17
Re: Let there be Phos :) 306 magisterchessmutt 08-Jan-18 12:35
Re: Let there be Phos :) 321 DavidK 08-Jan-18 17:45
Re: Let there be Phos :) 313 DavidK 08-Jan-18 19:43
Re: Let there be Phos :) 401 magisterchessmutt 09-Jan-18 03:46
Re: Let there be Phos :) 335 DavidK 09-Jan-18 18:21
Re: Let there be Phos :) The Scottish mile 338 molder 10-Jan-18 13:33
Re: Let there be Phos :) The Scottish mile 294 molder 10-Jan-18 13:57
Re: Let there be Phos :) The Scottish mile 298 DavidK 10-Jan-18 15:07
Re: Let there be Phos :) 252 DavidK 10-Jan-18 16:38
Re: Let there be Phos :) 290 DavidK 10-Jan-18 16:46
Re: Let there be Phos :) 339 DavidK 10-Jan-18 21:18
Re: Let there be Phos :) 306 molder 11-Jan-18 21:54
Re: Let there be Phos :) 306 magisterchessmutt 12-Jan-18 10:29
Re: Let there be Phos :) 268 DavidK 12-Jan-18 11:17
Re: Let there be Phos :) 261 DavidK 12-Jan-18 10:40
Re: Let there be Phos :) 295 magisterchessmutt 12-Jan-18 12:01
Re: Let there be Phos :) 293 DavidK 12-Jan-18 13:06
Re: Let there be Phos :) 270 DavidK 12-Jan-18 12:06
Re: Let there be Phos :) 310 magisterchessmutt 12-Jan-18 12:25
Re: Let there be Phos :) 352 DavidK 12-Jan-18 14:16
Re: Let there be Phos :) 306 magisterchessmutt 13-Jan-18 11:34
Re: Let there be Phos :) 264 DavidK 13-Jan-18 12:04
Re: Let there be Phos :) 314 magisterchessmutt 13-Jan-18 12:31
Re: Let there be Phos :) 399 DavidK 13-Jan-18 12:47
Let there be Phos at the GP 472 DavidK 17-Jan-18 15:13
Re: Let there be Phos :) 333 DavidK 22-Mar-18 22:50
Re: Let there be Phos :) 382 magisterchessmutt 27-Mar-18 21:19
Re: Let there be Phos :) 364 DavidK 07-Apr-18 20:01


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