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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 :) 2533 magisterchessmutt 16-Dec-17 03:08
Re: Let there be Phos :) 360 magisterchessmutt 16-Dec-17 14:12
Re: Let there be Phos :) 401 drew 17-Dec-17 02:30
Re: Let there be Phos :) 269 magisterchessmutt 17-Dec-17 14:17
Re: Let there be Phos :) 365 Sirfiroth 17-Dec-17 21:38
Re: Let there be Phos :) 306 magisterchessmutt 17-Dec-17 22:29
Re: Let there be Phos :) 373 Horatech 18-Dec-17 06:12
Re: Let there be Phos :) 276 magisterchessmutt 18-Dec-17 14:03
Re: Let there be Phos :) 387 Horatech 18-Dec-17 23:27
Re: Let there be Phos :) 322 magisterchessmutt 19-Dec-17 02:49
Re: Let there be Phos :) 291 molder 19-Dec-17 05:00
Re: Let there be Phos :) 304 Horatech 19-Dec-17 06:19
Re: Let there be Phos :) 297 magisterchessmutt 19-Dec-17 06:25
Re: Let there be Phos :) 302 molder 19-Dec-17 07:11
Re: Let there be Phos :) 377 magisterchessmutt 19-Dec-17 11:56
Re: Let there be Phos :) 294 Sirfiroth 19-Dec-17 19:32
Re: Let there be Phos :) 353 magisterchessmutt 20-Dec-17 03:00
Re: Let there be Phos :) 269 Sirfiroth 20-Dec-17 16:03
Re: Let there be Phos :) 295 magisterchessmutt 21-Dec-17 06:22
Re: Let there be Phos :) 262 molder 19-Dec-17 22:08
Re: Let there be Phos :) 295 magisterchessmutt 20-Dec-17 02:08
Re: Let there be Phos :) 286 molder 20-Dec-17 20:57
Re: Let there be Phos :) 318 magisterchessmutt 22-Dec-17 02:33
Re: Let there be Phos :) 285 magisterchessmutt 22-Dec-17 04:23
Re: Let there be Phos :) 297 mmstud 22-Dec-17 08:12
Re: Let there be Phos :) 314 magisterchessmutt 22-Dec-17 10:44
Re: Let there be Phos :) 289 mmstud 22-Dec-17 12:26
Re: Let there be Phos :) 386 magisterchessmutt 23-Dec-17 00:47
Re: Let there be Phos :) 410 magisterchessmutt 24-Dec-17 15:20
Re: Let there be Phos :) 377 magisterchessmutt 24-Dec-17 04:07
Re: Let there be Phos :) 309 drew 18-Dec-17 00:51
Re: Let there be Phos :) 319 magisterchessmutt 18-Dec-17 02:11
Re: Let there be Phos :) 410 mmstud 22-Dec-17 14:44
Re: Let there be Phos :)Doubling a cube 383 molder 22-Dec-17 21:21
Re: Let there be Phos :)Doubling a cube 435 molder 23-Dec-17 22:27
Re: Let there be Phos :)Doubling a cube 344 magisterchessmutt 24-Dec-17 01:55
Re: Let there be Phos :)Doubling a cube 359 magisterchessmutt 26-Dec-17 14:53
Re: Let there be Phos :)Doubling a cube 287 molder 26-Dec-17 21:51
Re: Let there be Phos :)Doubling a cube 299 magisterchessmutt 27-Dec-17 03:36
Re: Let there be Phos :)Doubling a cube 282 molder 27-Dec-17 05:02
Re: Let there be Phos :)Doubling a cube 334 magisterchessmutt 27-Dec-17 11:07
Re: Let there be Phos :)Doubling a cube 316 rodz111 29-Dec-17 22:44
Re: Let there be Phos :)Doubling a cube 254 Sirfiroth 28-Dec-17 18:28
Re: Let there be Phos :)Doubling a cube 339 DavidK 28-Dec-17 19:33
Re: Let there be Phos :)Doubling a cube 351 magisterchessmutt 29-Dec-17 02:42
Re: Let there be Phos :)Doubling a cube 387 Sirfiroth 29-Dec-17 14:27
Re: Let there be Phos :)Doubling a cube 326 DavidK 29-Dec-17 15:05
Re: Let there be Phos :)Doubling a cube 339 magisterchessmutt 29-Dec-17 01:37
Re: Let there be Phos :)Doubling a cube 396 DavidK 29-Dec-17 01:52
Re: Let there be Phos :)Doubling a cube 457 magisterchessmutt 29-Dec-17 03:04
Re: Let there be Phos :)Doubling a cube 264 molder 31-Dec-17 22:57
Re: Let there be Phos :) 393 cladking 28-Dec-17 20:36
Re: Let there be Phos :) 337 magisterchessmutt 29-Dec-17 01:47
Re: Let there be Phos :) 325 cladking 29-Dec-17 02:06
Re: Let there be Phos :) 306 cladking 29-Dec-17 23:02
Re: Let there be Phos :) 434 DavidK 29-Dec-17 10:51
Re: Let there be Phos :) Lunar Target Practice 335 magisterchessmutt 30-Dec-17 03:24
Re: Let there be Phos :) 377 DavidK 29-Dec-17 15:22
Re: Let there be Phos :) 337 magisterchessmutt 30-Dec-17 04:28
Re: Let there be Phos :) 403 DavidK 30-Dec-17 15:56
Re: Let there be Phos :) 294 magisterchessmutt 31-Dec-17 05:32
Re: Let there be Phos :) 403 DavidK 31-Dec-17 10:28
Re: Let there be Phos :) 335 magisterchessmutt 31-Dec-17 12:18
Re: Let there be Phos :) Lunar Reflections 356 magisterchessmutt 01-Jan-18 11:07
Re: Let there be Phos :) Lunar Reflections 363 DavidK 01-Jan-18 11:40
Re: Let there be Phos :) Lunar Reflections 337 magisterchessmutt 01-Jan-18 13:00
Re: Let there be Phos :) Lunar Reflections 338 DavidK 01-Jan-18 13:39
Re: Let there be Phos :) Lunar Reflections 330 magisterchessmutt 02-Jan-18 04:12
Re: Let there be Phos :) Lunar Reflections 370 DavidK 02-Jan-18 09:34
Re: Let there be Phos :) Lunar Reflections 296 magisterchessmutt 02-Jan-18 12:30
Re: Let there be Phos :) Lunar Reflections 406 DavidK 02-Jan-18 13:20
Re: Let there be Phos :) Lunar Reflections 293 magisterchessmutt 03-Jan-18 03:57
Re: Let there be Phos :) Lunar Reflections 256 molder 03-Jan-18 06:00
Re: Let there be Phos :) Lunar Reflections 250 magisterchessmutt 03-Jan-18 07:04
Re: Let there be Phos :) Lunar Reflections 398 molder 03-Jan-18 08:47
Re:A Canonical alternative 331 cloister 03-Jan-18 10:14
Re: Re:A Canonical alternative 266 magisterchessmutt 03-Jan-18 11:16
Re: Re:A Canonical alternative 269 molder 03-Jan-18 11:46
Re: Re:A Canonical alternative 254 magisterchessmutt 03-Jan-18 12:18
Re: Re:A Canonical alternative 293 molder 03-Jan-18 12:34
Re: Re:A Canonical alternative 263 magisterchessmutt 03-Jan-18 13:19
Re: Re:A Canonical alternative 287 cloister 03-Jan-18 15:20
Re: Re:A Canonical alternative 271 magisterchessmutt 03-Jan-18 16:55
Re: Re:A Canonical alternative 373 cloister 05-Jan-18 17:23
Re: Re:A Canonical alternative 276 Origyptian 06-Jan-18 18:14
Re: Re:A Canonical alternative 269 magisterchessmutt 08-Jan-18 04:45
Re: Re:A Canonical alternative 339 cloister 08-Jan-18 11:25
Re: Re:A Canonical alternative 314 DavidK 03-Jan-18 15:37
Re: Re:A Canonical alternative 289 magisterchessmutt 03-Jan-18 17:31
Re: Re:A Canonical alternative 335 DavidK 03-Jan-18 18:54
Re: Re:A Canonical alternative 281 magisterchessmutt 04-Jan-18 03:04
Re: Re:A Canonical alternative 400 DavidK 04-Jan-18 09:55
Re: Re:A Canonical alternative 231 magisterchessmutt 04-Jan-18 11:20
Re: Re:A Canonical alternative 283 DavidK 04-Jan-18 11:55
Re: Re:A Canonical alternative 405 magisterchessmutt 04-Jan-18 12:13
Re: Re:A Canonical alternative 295 Sirfiroth 07-Jan-18 00:00
Re: Re:A Canonical alternative 329 magisterchessmutt 07-Jan-18 00:46
Re: Re:A Canonical alternative 273 magisterchessmutt 07-Jan-18 07:41
Re: Re:A Canonical alternative 337 cloister 07-Jan-18 09:07
Re: Let there be Phos :) 304 magisterchessmutt 07-Jan-18 16:12
Re: Let there be Phos :) 359 DavidK 07-Jan-18 18:28
Re: Let there be Phos :) 339 magisterchessmutt 07-Jan-18 22:43
Re: Let there be Phos :) 346 DavidK 07-Jan-18 23:09
Re: Let there be Phos :) 334 DavidK 07-Jan-18 23:53
Re: Let there be Phos :) 297 magisterchessmutt 08-Jan-18 03:37
Re: Let there be Phos :) 299 magisterchessmutt 08-Jan-18 04:05
Re: Let there be Phos :) 302 DavidK 08-Jan-18 08:25
Re: Let there be Phos :) 280 magisterchessmutt 08-Jan-18 10:28
Re: Let there be Phos :) 308 DavidK 08-Jan-18 10:59
Re: Let there be Phos :) 255 DavidK 08-Jan-18 11:17
Re: Let there be Phos :) 276 magisterchessmutt 08-Jan-18 12:35
Re: Let there be Phos :) 280 DavidK 08-Jan-18 17:45
Re: Let there be Phos :) 282 DavidK 08-Jan-18 19:43
Re: Let there be Phos :) 365 magisterchessmutt 09-Jan-18 03:46
Re: Let there be Phos :) 300 DavidK 09-Jan-18 18:21
Re: Let there be Phos :) The Scottish mile 307 molder 10-Jan-18 13:33
Re: Let there be Phos :) The Scottish mile 269 molder 10-Jan-18 13:57
Re: Let there be Phos :) The Scottish mile 265 DavidK 10-Jan-18 15:07
Re: Let there be Phos :) 225 DavidK 10-Jan-18 16:38
Re: Let there be Phos :) 266 DavidK 10-Jan-18 16:46
Re: Let there be Phos :) 312 DavidK 10-Jan-18 21:18
Re: Let there be Phos :) 276 molder 11-Jan-18 21:54
Re: Let there be Phos :) 275 magisterchessmutt 12-Jan-18 10:29
Re: Let there be Phos :) 244 DavidK 12-Jan-18 11:17
Re: Let there be Phos :) 236 DavidK 12-Jan-18 10:40
Re: Let there be Phos :) 254 magisterchessmutt 12-Jan-18 12:01
Re: Let there be Phos :) 267 DavidK 12-Jan-18 13:06
Re: Let there be Phos :) 245 DavidK 12-Jan-18 12:06
Re: Let there be Phos :) 266 magisterchessmutt 12-Jan-18 12:25
Re: Let there be Phos :) 313 DavidK 12-Jan-18 14:16
Re: Let there be Phos :) 275 magisterchessmutt 13-Jan-18 11:34
Re: Let there be Phos :) 231 DavidK 13-Jan-18 12:04
Re: Let there be Phos :) 283 magisterchessmutt 13-Jan-18 12:31
Re: Let there be Phos :) 370 DavidK 13-Jan-18 12:47
Let there be Phos at the GP 436 DavidK 17-Jan-18 15:13
Re: Let there be Phos :) 306 DavidK 22-Mar-18 22:50
Re: Let there be Phos :) 347 magisterchessmutt 27-Mar-18 21:19
Re: Let there be Phos :) 338 DavidK 07-Apr-18 20:01


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