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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 :) 2339 magisterchessmutt 16-Dec-17 03:08
Re: Let there be Phos :) 249 magisterchessmutt 16-Dec-17 14:12
Re: Let there be Phos :) 295 drew 17-Dec-17 02:30
Re: Let there be Phos :) 185 magisterchessmutt 17-Dec-17 14:17
Re: Let there be Phos :) 260 Sirfiroth 17-Dec-17 21:38
Re: Let there be Phos :) 215 magisterchessmutt 17-Dec-17 22:29
Re: Let there be Phos :) 290 Horatech 18-Dec-17 06:12
Re: Let there be Phos :) 195 magisterchessmutt 18-Dec-17 14:03
Re: Let there be Phos :) 261 Horatech 18-Dec-17 23:27
Re: Let there be Phos :) 231 magisterchessmutt 19-Dec-17 02:49
Re: Let there be Phos :) 225 molder 19-Dec-17 05:00
Re: Let there be Phos :) 208 Horatech 19-Dec-17 06:19
Re: Let there be Phos :) 225 magisterchessmutt 19-Dec-17 06:25
Re: Let there be Phos :) 214 molder 19-Dec-17 07:11
Re: Let there be Phos :) 281 magisterchessmutt 19-Dec-17 11:56
Re: Let there be Phos :) 216 Sirfiroth 19-Dec-17 19:32
Re: Let there be Phos :) 250 magisterchessmutt 20-Dec-17 03:00
Re: Let there be Phos :) 188 Sirfiroth 20-Dec-17 16:03
Re: Let there be Phos :) 218 magisterchessmutt 21-Dec-17 06:22
Re: Let there be Phos :) 196 molder 19-Dec-17 22:08
Re: Let there be Phos :) 208 magisterchessmutt 20-Dec-17 02:08
Re: Let there be Phos :) 219 molder 20-Dec-17 20:57
Re: Let there be Phos :) 240 magisterchessmutt 22-Dec-17 02:33
Re: Let there be Phos :) 197 magisterchessmutt 22-Dec-17 04:23
Re: Let there be Phos :) 226 mmstud 22-Dec-17 08:12
Re: Let there be Phos :) 251 magisterchessmutt 22-Dec-17 10:44
Re: Let there be Phos :) 215 mmstud 22-Dec-17 12:26
Re: Let there be Phos :) 294 magisterchessmutt 23-Dec-17 00:47
Re: Let there be Phos :) 287 magisterchessmutt 24-Dec-17 15:20
Re: Let there be Phos :) 287 magisterchessmutt 24-Dec-17 04:07
Re: Let there be Phos :) 225 drew 18-Dec-17 00:51
Re: Let there be Phos :) 220 magisterchessmutt 18-Dec-17 02:11
Re: Let there be Phos :) 315 mmstud 22-Dec-17 14:44
Re: Let there be Phos :)Doubling a cube 295 molder 22-Dec-17 21:21
Re: Let there be Phos :)Doubling a cube 313 molder 23-Dec-17 22:27
Re: Let there be Phos :)Doubling a cube 247 magisterchessmutt 24-Dec-17 01:55
Re: Let there be Phos :)Doubling a cube 258 magisterchessmutt 26-Dec-17 14:53
Re: Let there be Phos :)Doubling a cube 203 molder 26-Dec-17 21:51
Re: Let there be Phos :)Doubling a cube 211 magisterchessmutt 27-Dec-17 03:36
Re: Let there be Phos :)Doubling a cube 187 molder 27-Dec-17 05:02
Re: Let there be Phos :)Doubling a cube 255 magisterchessmutt 27-Dec-17 11:07
Re: Let there be Phos :)Doubling a cube 215 rodz111 29-Dec-17 22:44
Re: Let there be Phos :)Doubling a cube 185 Sirfiroth 28-Dec-17 18:28
Re: Let there be Phos :)Doubling a cube 237 DavidK 28-Dec-17 19:33
Re: Let there be Phos :)Doubling a cube 231 magisterchessmutt 29-Dec-17 02:42
Re: Let there be Phos :)Doubling a cube 284 Sirfiroth 29-Dec-17 14:27
Re: Let there be Phos :)Doubling a cube 231 DavidK 29-Dec-17 15:05
Re: Let there be Phos :)Doubling a cube 240 magisterchessmutt 29-Dec-17 01:37
Re: Let there be Phos :)Doubling a cube 284 DavidK 29-Dec-17 01:52
Re: Let there be Phos :)Doubling a cube 350 magisterchessmutt 29-Dec-17 03:04
Re: Let there be Phos :)Doubling a cube 192 molder 31-Dec-17 22:57
Re: Let there be Phos :) 278 cladking 28-Dec-17 20:36
Re: Let there be Phos :) 234 magisterchessmutt 29-Dec-17 01:47
Re: Let there be Phos :) 222 cladking 29-Dec-17 02:06
Re: Let there be Phos :) 232 cladking 29-Dec-17 23:02
Re: Let there be Phos :) 314 DavidK 29-Dec-17 10:51
Re: Let there be Phos :) Lunar Target Practice 231 magisterchessmutt 30-Dec-17 03:24
Re: Let there be Phos :) 268 DavidK 29-Dec-17 15:22
Re: Let there be Phos :) 265 magisterchessmutt 30-Dec-17 04:28
Re: Let there be Phos :) 310 DavidK 30-Dec-17 15:56
Re: Let there be Phos :) 211 magisterchessmutt 31-Dec-17 05:32
Re: Let there be Phos :) 294 DavidK 31-Dec-17 10:28
Re: Let there be Phos :) 243 magisterchessmutt 31-Dec-17 12:18
Re: Let there be Phos :) Lunar Reflections 268 magisterchessmutt 01-Jan-18 11:07
Re: Let there be Phos :) Lunar Reflections 255 DavidK 01-Jan-18 11:40
Re: Let there be Phos :) Lunar Reflections 227 magisterchessmutt 01-Jan-18 13:00
Re: Let there be Phos :) Lunar Reflections 246 DavidK 01-Jan-18 13:39
Re: Let there be Phos :) Lunar Reflections 237 magisterchessmutt 02-Jan-18 04:12
Re: Let there be Phos :) Lunar Reflections 267 DavidK 02-Jan-18 09:34
Re: Let there be Phos :) Lunar Reflections 211 magisterchessmutt 02-Jan-18 12:30
Re: Let there be Phos :) Lunar Reflections 306 DavidK 02-Jan-18 13:20
Re: Let there be Phos :) Lunar Reflections 219 magisterchessmutt 03-Jan-18 03:57
Re: Let there be Phos :) Lunar Reflections 178 molder 03-Jan-18 06:00
Re: Let there be Phos :) Lunar Reflections 185 magisterchessmutt 03-Jan-18 07:04
Re: Let there be Phos :) Lunar Reflections 303 molder 03-Jan-18 08:47
Re:A Canonical alternative 220 cloister 03-Jan-18 10:14
Re: Re:A Canonical alternative 198 magisterchessmutt 03-Jan-18 11:16
Re: Re:A Canonical alternative 194 molder 03-Jan-18 11:46
Re: Re:A Canonical alternative 186 magisterchessmutt 03-Jan-18 12:18
Re: Re:A Canonical alternative 204 molder 03-Jan-18 12:34
Re: Re:A Canonical alternative 192 magisterchessmutt 03-Jan-18 13:19
Re: Re:A Canonical alternative 205 cloister 03-Jan-18 15:20
Re: Re:A Canonical alternative 193 magisterchessmutt 03-Jan-18 16:55
Re: Re:A Canonical alternative 279 cloister 05-Jan-18 17:23
Re: Re:A Canonical alternative 190 Origyptian 06-Jan-18 18:14
Re: Re:A Canonical alternative 204 magisterchessmutt 08-Jan-18 04:45
Re: Re:A Canonical alternative 256 cloister 08-Jan-18 11:25
Re: Re:A Canonical alternative 237 DavidK 03-Jan-18 15:37
Re: Re:A Canonical alternative 201 magisterchessmutt 03-Jan-18 17:31
Re: Re:A Canonical alternative 251 DavidK 03-Jan-18 18:54
Re: Re:A Canonical alternative 197 magisterchessmutt 04-Jan-18 03:04
Re: Re:A Canonical alternative 283 DavidK 04-Jan-18 09:55
Re: Re:A Canonical alternative 146 magisterchessmutt 04-Jan-18 11:20
Re: Re:A Canonical alternative 197 DavidK 04-Jan-18 11:55
Re: Re:A Canonical alternative 283 magisterchessmutt 04-Jan-18 12:13
Re: Re:A Canonical alternative 221 Sirfiroth 07-Jan-18 00:00
Re: Re:A Canonical alternative 244 magisterchessmutt 07-Jan-18 00:46
Re: Re:A Canonical alternative 196 magisterchessmutt 07-Jan-18 07:41
Re: Re:A Canonical alternative 248 cloister 07-Jan-18 09:07
Re: Let there be Phos :) 206 magisterchessmutt 07-Jan-18 16:12
Re: Let there be Phos :) 250 DavidK 07-Jan-18 18:28
Re: Let there be Phos :) 226 magisterchessmutt 07-Jan-18 22:43
Re: Let there be Phos :) 250 DavidK 07-Jan-18 23:09
Re: Let there be Phos :) 229 DavidK 07-Jan-18 23:53
Re: Let there be Phos :) 218 magisterchessmutt 08-Jan-18 03:37
Re: Let there be Phos :) 220 magisterchessmutt 08-Jan-18 04:05
Re: Let there be Phos :) 229 DavidK 08-Jan-18 08:25
Re: Let there be Phos :) 195 magisterchessmutt 08-Jan-18 10:28
Re: Let there be Phos :) 239 DavidK 08-Jan-18 10:59
Re: Let there be Phos :) 180 DavidK 08-Jan-18 11:17
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Re: Let there be Phos :) 204 DavidK 08-Jan-18 17:45
Re: Let there be Phos :) 185 DavidK 08-Jan-18 19:43
Re: Let there be Phos :) 254 magisterchessmutt 09-Jan-18 03:46
Re: Let there be Phos :) 203 DavidK 09-Jan-18 18:21
Re: Let there be Phos :) The Scottish mile 233 molder 10-Jan-18 13:33
Re: Let there be Phos :) The Scottish mile 182 molder 10-Jan-18 13:57
Re: Let there be Phos :) The Scottish mile 176 DavidK 10-Jan-18 15:07
Re: Let there be Phos :) 164 DavidK 10-Jan-18 16:38
Re: Let there be Phos :) 188 DavidK 10-Jan-18 16:46
Re: Let there be Phos :) 219 DavidK 10-Jan-18 21:18
Re: Let there be Phos :) 192 molder 11-Jan-18 21:54
Re: Let there be Phos :) 207 magisterchessmutt 12-Jan-18 10:29
Re: Let there be Phos :) 187 DavidK 12-Jan-18 11:17
Re: Let there be Phos :) 161 DavidK 12-Jan-18 10:40
Re: Let there be Phos :) 166 magisterchessmutt 12-Jan-18 12:01
Re: Let there be Phos :) 204 DavidK 12-Jan-18 13:06
Re: Let there be Phos :) 163 DavidK 12-Jan-18 12:06
Re: Let there be Phos :) 190 magisterchessmutt 12-Jan-18 12:25
Re: Let there be Phos :) 242 DavidK 12-Jan-18 14:16
Re: Let there be Phos :) 195 magisterchessmutt 13-Jan-18 11:34
Re: Let there be Phos :) 167 DavidK 13-Jan-18 12:04
Re: Let there be Phos :) 196 magisterchessmutt 13-Jan-18 12:31
Re: Let there be Phos :) 279 DavidK 13-Jan-18 12:47
Let there be Phos at the GP 283 DavidK 17-Jan-18 15:13
Re: Let there be Phos :) 221 DavidK 22-Mar-18 22:50
Re: Let there be Phos :) 251 magisterchessmutt 27-Mar-18 21:19
Re: Let there be Phos :) 250 DavidK 07-Apr-18 20:01


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