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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 :) 2282 magisterchessmutt 16-Dec-17 03:08
Re: Let there be Phos :) 225 magisterchessmutt 16-Dec-17 14:12
Re: Let there be Phos :) 270 drew 17-Dec-17 02:30
Re: Let there be Phos :) 173 magisterchessmutt 17-Dec-17 14:17
Re: Let there be Phos :) 221 Sirfiroth 17-Dec-17 21:38
Re: Let there be Phos :) 200 magisterchessmutt 17-Dec-17 22:29
Re: Let there be Phos :) 268 Horatech 18-Dec-17 06:12
Re: Let there be Phos :) 181 magisterchessmutt 18-Dec-17 14:03
Re: Let there be Phos :) 232 Horatech 18-Dec-17 23:27
Re: Let there be Phos :) 214 magisterchessmutt 19-Dec-17 02:49
Re: Let there be Phos :) 209 molder 19-Dec-17 05:00
Re: Let there be Phos :) 189 Horatech 19-Dec-17 06:19
Re: Let there be Phos :) 211 magisterchessmutt 19-Dec-17 06:25
Re: Let there be Phos :) 198 molder 19-Dec-17 07:11
Re: Let there be Phos :) 263 magisterchessmutt 19-Dec-17 11:56
Re: Let there be Phos :) 198 Sirfiroth 19-Dec-17 19:32
Re: Let there be Phos :) 232 magisterchessmutt 20-Dec-17 03:00
Re: Let there be Phos :) 175 Sirfiroth 20-Dec-17 16:03
Re: Let there be Phos :) 204 magisterchessmutt 21-Dec-17 06:22
Re: Let there be Phos :) 181 molder 19-Dec-17 22:08
Re: Let there be Phos :) 197 magisterchessmutt 20-Dec-17 02:08
Re: Let there be Phos :) 206 molder 20-Dec-17 20:57
Re: Let there be Phos :) 216 magisterchessmutt 22-Dec-17 02:33
Re: Let there be Phos :) 183 magisterchessmutt 22-Dec-17 04:23
Re: Let there be Phos :) 207 mmstud 22-Dec-17 08:12
Re: Let there be Phos :) 236 magisterchessmutt 22-Dec-17 10:44
Re: Let there be Phos :) 202 mmstud 22-Dec-17 12:26
Re: Let there be Phos :) 270 magisterchessmutt 23-Dec-17 00:47
Re: Let there be Phos :) 268 magisterchessmutt 24-Dec-17 15:20
Re: Let there be Phos :) 265 magisterchessmutt 24-Dec-17 04:07
Re: Let there be Phos :) 211 drew 18-Dec-17 00:51
Re: Let there be Phos :) 206 magisterchessmutt 18-Dec-17 02:11
Re: Let there be Phos :) 295 mmstud 22-Dec-17 14:44
Re: Let there be Phos :)Doubling a cube 278 molder 22-Dec-17 21:21
Re: Let there be Phos :)Doubling a cube 282 molder 23-Dec-17 22:27
Re: Let there be Phos :)Doubling a cube 232 magisterchessmutt 24-Dec-17 01:55
Re: Let there be Phos :)Doubling a cube 235 magisterchessmutt 26-Dec-17 14:53
Re: Let there be Phos :)Doubling a cube 192 molder 26-Dec-17 21:51
Re: Let there be Phos :)Doubling a cube 189 magisterchessmutt 27-Dec-17 03:36
Re: Let there be Phos :)Doubling a cube 174 molder 27-Dec-17 05:02
Re: Let there be Phos :)Doubling a cube 239 magisterchessmutt 27-Dec-17 11:07
Re: Let there be Phos :)Doubling a cube 196 rodz111 29-Dec-17 22:44
Re: Let there be Phos :)Doubling a cube 173 Sirfiroth 28-Dec-17 18:28
Re: Let there be Phos :)Doubling a cube 206 DavidK 28-Dec-17 19:33
Re: Let there be Phos :)Doubling a cube 207 magisterchessmutt 29-Dec-17 02:42
Re: Let there be Phos :)Doubling a cube 262 Sirfiroth 29-Dec-17 14:27
Re: Let there be Phos :)Doubling a cube 201 DavidK 29-Dec-17 15:05
Re: Let there be Phos :)Doubling a cube 217 magisterchessmutt 29-Dec-17 01:37
Re: Let there be Phos :)Doubling a cube 255 DavidK 29-Dec-17 01:52
Re: Let there be Phos :)Doubling a cube 318 magisterchessmutt 29-Dec-17 03:04
Re: Let there be Phos :)Doubling a cube 180 molder 31-Dec-17 22:57
Re: Let there be Phos :) 257 cladking 28-Dec-17 20:36
Re: Let there be Phos :) 218 magisterchessmutt 29-Dec-17 01:47
Re: Let there be Phos :) 195 cladking 29-Dec-17 02:06
Re: Let there be Phos :) 208 cladking 29-Dec-17 23:02
Re: Let there be Phos :) 284 DavidK 29-Dec-17 10:51
Re: Let there be Phos :) Lunar Target Practice 209 magisterchessmutt 30-Dec-17 03:24
Re: Let there be Phos :) 235 DavidK 29-Dec-17 15:22
Re: Let there be Phos :) 234 magisterchessmutt 30-Dec-17 04:28
Re: Let there be Phos :) 273 DavidK 30-Dec-17 15:56
Re: Let there be Phos :) 188 magisterchessmutt 31-Dec-17 05:32
Re: Let there be Phos :) 258 DavidK 31-Dec-17 10:28
Re: Let there be Phos :) 211 magisterchessmutt 31-Dec-17 12:18
Re: Let there be Phos :) Lunar Reflections 240 magisterchessmutt 01-Jan-18 11:07
Re: Let there be Phos :) Lunar Reflections 221 DavidK 01-Jan-18 11:40
Re: Let there be Phos :) Lunar Reflections 205 magisterchessmutt 01-Jan-18 13:00
Re: Let there be Phos :) Lunar Reflections 207 DavidK 01-Jan-18 13:39
Re: Let there be Phos :) Lunar Reflections 216 magisterchessmutt 02-Jan-18 04:12
Re: Let there be Phos :) Lunar Reflections 237 DavidK 02-Jan-18 09:34
Re: Let there be Phos :) Lunar Reflections 194 magisterchessmutt 02-Jan-18 12:30
Re: Let there be Phos :) Lunar Reflections 277 DavidK 02-Jan-18 13:20
Re: Let there be Phos :) Lunar Reflections 205 magisterchessmutt 03-Jan-18 03:57
Re: Let there be Phos :) Lunar Reflections 167 molder 03-Jan-18 06:00
Re: Let there be Phos :) Lunar Reflections 173 magisterchessmutt 03-Jan-18 07:04
Re: Let there be Phos :) Lunar Reflections 272 molder 03-Jan-18 08:47
Re:A Canonical alternative 202 cloister 03-Jan-18 10:14
Re: Re:A Canonical alternative 176 magisterchessmutt 03-Jan-18 11:16
Re: Re:A Canonical alternative 179 molder 03-Jan-18 11:46
Re: Re:A Canonical alternative 173 magisterchessmutt 03-Jan-18 12:18
Re: Re:A Canonical alternative 187 molder 03-Jan-18 12:34
Re: Re:A Canonical alternative 178 magisterchessmutt 03-Jan-18 13:19
Re: Re:A Canonical alternative 188 cloister 03-Jan-18 15:20
Re: Re:A Canonical alternative 176 magisterchessmutt 03-Jan-18 16:55
Re: Re:A Canonical alternative 256 cloister 05-Jan-18 17:23
Re: Re:A Canonical alternative 174 Origyptian 06-Jan-18 18:14
Re: Re:A Canonical alternative 191 magisterchessmutt 08-Jan-18 04:45
Re: Re:A Canonical alternative 239 cloister 08-Jan-18 11:25
Re: Re:A Canonical alternative 214 DavidK 03-Jan-18 15:37
Re: Re:A Canonical alternative 174 magisterchessmutt 03-Jan-18 17:31
Re: Re:A Canonical alternative 236 DavidK 03-Jan-18 18:54
Re: Re:A Canonical alternative 179 magisterchessmutt 04-Jan-18 03:04
Re: Re:A Canonical alternative 252 DavidK 04-Jan-18 09:55
Re: Re:A Canonical alternative 127 magisterchessmutt 04-Jan-18 11:20
Re: Re:A Canonical alternative 187 DavidK 04-Jan-18 11:55
Re: Re:A Canonical alternative 267 magisterchessmutt 04-Jan-18 12:13
Re: Re:A Canonical alternative 208 Sirfiroth 07-Jan-18 00:00
Re: Re:A Canonical alternative 218 magisterchessmutt 07-Jan-18 00:46
Re: Re:A Canonical alternative 177 magisterchessmutt 07-Jan-18 07:41
Re: Re:A Canonical alternative 231 cloister 07-Jan-18 09:07
Re: Let there be Phos :) 190 magisterchessmutt 07-Jan-18 16:12
Re: Let there be Phos :) 233 DavidK 07-Jan-18 18:28
Re: Let there be Phos :) 197 magisterchessmutt 07-Jan-18 22:43
Re: Let there be Phos :) 232 DavidK 07-Jan-18 23:09
Re: Let there be Phos :) 205 DavidK 07-Jan-18 23:53
Re: Let there be Phos :) 200 magisterchessmutt 08-Jan-18 03:37
Re: Let there be Phos :) 196 magisterchessmutt 08-Jan-18 04:05
Re: Let there be Phos :) 215 DavidK 08-Jan-18 08:25
Re: Let there be Phos :) 180 magisterchessmutt 08-Jan-18 10:28
Re: Let there be Phos :) 223 DavidK 08-Jan-18 10:59
Re: Let there be Phos :) 160 DavidK 08-Jan-18 11:17
Re: Let there be Phos :) 183 magisterchessmutt 08-Jan-18 12:35
Re: Let there be Phos :) 190 DavidK 08-Jan-18 17:45
Re: Let there be Phos :) 166 DavidK 08-Jan-18 19:43
Re: Let there be Phos :) 233 magisterchessmutt 09-Jan-18 03:46
Re: Let there be Phos :) 184 DavidK 09-Jan-18 18:21
Re: Let there be Phos :) The Scottish mile 196 molder 10-Jan-18 13:33
Re: Let there be Phos :) The Scottish mile 162 molder 10-Jan-18 13:57
Re: Let there be Phos :) The Scottish mile 166 DavidK 10-Jan-18 15:07
Re: Let there be Phos :) 140 DavidK 10-Jan-18 16:38
Re: Let there be Phos :) 176 DavidK 10-Jan-18 16:46
Re: Let there be Phos :) 200 DavidK 10-Jan-18 21:18
Re: Let there be Phos :) 170 molder 11-Jan-18 21:54
Re: Let there be Phos :) 183 magisterchessmutt 12-Jan-18 10:29
Re: Let there be Phos :) 179 DavidK 12-Jan-18 11:17
Re: Let there be Phos :) 148 DavidK 12-Jan-18 10:40
Re: Let there be Phos :) 151 magisterchessmutt 12-Jan-18 12:01
Re: Let there be Phos :) 193 DavidK 12-Jan-18 13:06
Re: Let there be Phos :) 153 DavidK 12-Jan-18 12:06
Re: Let there be Phos :) 173 magisterchessmutt 12-Jan-18 12:25
Re: Let there be Phos :) 216 DavidK 12-Jan-18 14:16
Re: Let there be Phos :) 181 magisterchessmutt 13-Jan-18 11:34
Re: Let there be Phos :) 156 DavidK 13-Jan-18 12:04
Re: Let there be Phos :) 178 magisterchessmutt 13-Jan-18 12:31
Re: Let there be Phos :) 257 DavidK 13-Jan-18 12:47
Let there be Phos at the GP 261 DavidK 17-Jan-18 15:13
Re: Let there be Phos :) 184 DavidK 22-Mar-18 22:50
Re: Let there be Phos :) 222 magisterchessmutt 27-Mar-18 21:19
Re: Let there be Phos :) 224 DavidK 07-Apr-18 20:01


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