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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 :) 2225 magisterchessmutt 16-Dec-17 03:08
Re: Let there be Phos :) 206 magisterchessmutt 16-Dec-17 14:12
Re: Let there be Phos :) 243 drew 17-Dec-17 02:30
Re: Let there be Phos :) 156 magisterchessmutt 17-Dec-17 14:17
Re: Let there be Phos :) 196 Sirfiroth 17-Dec-17 21:38
Re: Let there be Phos :) 186 magisterchessmutt 17-Dec-17 22:29
Re: Let there be Phos :) 244 Horatech 18-Dec-17 06:12
Re: Let there be Phos :) 164 magisterchessmutt 18-Dec-17 14:03
Re: Let there be Phos :) 209 Horatech 18-Dec-17 23:27
Re: Let there be Phos :) 193 magisterchessmutt 19-Dec-17 02:49
Re: Let there be Phos :) 191 molder 19-Dec-17 05:00
Re: Let there be Phos :) 166 Horatech 19-Dec-17 06:19
Re: Let there be Phos :) 192 magisterchessmutt 19-Dec-17 06:25
Re: Let there be Phos :) 179 molder 19-Dec-17 07:11
Re: Let there be Phos :) 238 magisterchessmutt 19-Dec-17 11:56
Re: Let there be Phos :) 180 Sirfiroth 19-Dec-17 19:32
Re: Let there be Phos :) 215 magisterchessmutt 20-Dec-17 03:00
Re: Let there be Phos :) 158 Sirfiroth 20-Dec-17 16:03
Re: Let there be Phos :) 180 magisterchessmutt 21-Dec-17 06:22
Re: Let there be Phos :) 163 molder 19-Dec-17 22:08
Re: Let there be Phos :) 176 magisterchessmutt 20-Dec-17 02:08
Re: Let there be Phos :) 189 molder 20-Dec-17 20:57
Re: Let there be Phos :) 191 magisterchessmutt 22-Dec-17 02:33
Re: Let there be Phos :) 167 magisterchessmutt 22-Dec-17 04:23
Re: Let there be Phos :) 187 mmstud 22-Dec-17 08:12
Re: Let there be Phos :) 215 magisterchessmutt 22-Dec-17 10:44
Re: Let there be Phos :) 178 mmstud 22-Dec-17 12:26
Re: Let there be Phos :) 244 magisterchessmutt 23-Dec-17 00:47
Re: Let there be Phos :) 247 magisterchessmutt 24-Dec-17 15:20
Re: Let there be Phos :) 241 magisterchessmutt 24-Dec-17 04:07
Re: Let there be Phos :) 194 drew 18-Dec-17 00:51
Re: Let there be Phos :) 188 magisterchessmutt 18-Dec-17 02:11
Re: Let there be Phos :) 266 mmstud 22-Dec-17 14:44
Re: Let there be Phos :)Doubling a cube 243 molder 22-Dec-17 21:21
Re: Let there be Phos :)Doubling a cube 252 molder 23-Dec-17 22:27
Re: Let there be Phos :)Doubling a cube 207 magisterchessmutt 24-Dec-17 01:55
Re: Let there be Phos :)Doubling a cube 208 magisterchessmutt 26-Dec-17 14:53
Re: Let there be Phos :)Doubling a cube 171 molder 26-Dec-17 21:51
Re: Let there be Phos :)Doubling a cube 169 magisterchessmutt 27-Dec-17 03:36
Re: Let there be Phos :)Doubling a cube 155 molder 27-Dec-17 05:02
Re: Let there be Phos :)Doubling a cube 211 magisterchessmutt 27-Dec-17 11:07
Re: Let there be Phos :)Doubling a cube 168 rodz111 29-Dec-17 22:44
Re: Let there be Phos :)Doubling a cube 151 Sirfiroth 28-Dec-17 18:28
Re: Let there be Phos :)Doubling a cube 177 DavidK 28-Dec-17 19:33
Re: Let there be Phos :)Doubling a cube 182 magisterchessmutt 29-Dec-17 02:42
Re: Let there be Phos :)Doubling a cube 236 Sirfiroth 29-Dec-17 14:27
Re: Let there be Phos :)Doubling a cube 172 DavidK 29-Dec-17 15:05
Re: Let there be Phos :)Doubling a cube 190 magisterchessmutt 29-Dec-17 01:37
Re: Let there be Phos :)Doubling a cube 225 DavidK 29-Dec-17 01:52
Re: Let there be Phos :)Doubling a cube 288 magisterchessmutt 29-Dec-17 03:04
Re: Let there be Phos :)Doubling a cube 160 molder 31-Dec-17 22:57
Re: Let there be Phos :) 238 cladking 28-Dec-17 20:36
Re: Let there be Phos :) 189 magisterchessmutt 29-Dec-17 01:47
Re: Let there be Phos :) 174 cladking 29-Dec-17 02:06
Re: Let there be Phos :) 191 cladking 29-Dec-17 23:02
Re: Let there be Phos :) 250 DavidK 29-Dec-17 10:51
Re: Let there be Phos :) Lunar Target Practice 183 magisterchessmutt 30-Dec-17 03:24
Re: Let there be Phos :) 205 DavidK 29-Dec-17 15:22
Re: Let there be Phos :) 210 magisterchessmutt 30-Dec-17 04:28
Re: Let there be Phos :) 239 DavidK 30-Dec-17 15:56
Re: Let there be Phos :) 166 magisterchessmutt 31-Dec-17 05:32
Re: Let there be Phos :) 231 DavidK 31-Dec-17 10:28
Re: Let there be Phos :) 182 magisterchessmutt 31-Dec-17 12:18
Re: Let there be Phos :) Lunar Reflections 209 magisterchessmutt 01-Jan-18 11:07
Re: Let there be Phos :) Lunar Reflections 187 DavidK 01-Jan-18 11:40
Re: Let there be Phos :) Lunar Reflections 176 magisterchessmutt 01-Jan-18 13:00
Re: Let there be Phos :) Lunar Reflections 180 DavidK 01-Jan-18 13:39
Re: Let there be Phos :) Lunar Reflections 191 magisterchessmutt 02-Jan-18 04:12
Re: Let there be Phos :) Lunar Reflections 211 DavidK 02-Jan-18 09:34
Re: Let there be Phos :) Lunar Reflections 177 magisterchessmutt 02-Jan-18 12:30
Re: Let there be Phos :) Lunar Reflections 255 DavidK 02-Jan-18 13:20
Re: Let there be Phos :) Lunar Reflections 186 magisterchessmutt 03-Jan-18 03:57
Re: Let there be Phos :) Lunar Reflections 146 molder 03-Jan-18 06:00
Re: Let there be Phos :) Lunar Reflections 155 magisterchessmutt 03-Jan-18 07:04
Re: Let there be Phos :) Lunar Reflections 250 molder 03-Jan-18 08:47
Re:A Canonical alternative 181 cloister 03-Jan-18 10:14
Re: Re:A Canonical alternative 161 magisterchessmutt 03-Jan-18 11:16
Re: Re:A Canonical alternative 162 molder 03-Jan-18 11:46
Re: Re:A Canonical alternative 154 magisterchessmutt 03-Jan-18 12:18
Re: Re:A Canonical alternative 172 molder 03-Jan-18 12:34
Re: Re:A Canonical alternative 163 magisterchessmutt 03-Jan-18 13:19
Re: Re:A Canonical alternative 166 cloister 03-Jan-18 15:20
Re: Re:A Canonical alternative 156 magisterchessmutt 03-Jan-18 16:55
Re: Re:A Canonical alternative 230 cloister 05-Jan-18 17:23
Re: Re:A Canonical alternative 154 Origyptian 06-Jan-18 18:14
Re: Re:A Canonical alternative 168 magisterchessmutt 08-Jan-18 04:45
Re: Re:A Canonical alternative 216 cloister 08-Jan-18 11:25
Re: Re:A Canonical alternative 196 DavidK 03-Jan-18 15:37
Re: Re:A Canonical alternative 154 magisterchessmutt 03-Jan-18 17:31
Re: Re:A Canonical alternative 221 DavidK 03-Jan-18 18:54
Re: Re:A Canonical alternative 163 magisterchessmutt 04-Jan-18 03:04
Re: Re:A Canonical alternative 231 DavidK 04-Jan-18 09:55
Re: Re:A Canonical alternative 111 magisterchessmutt 04-Jan-18 11:20
Re: Re:A Canonical alternative 168 DavidK 04-Jan-18 11:55
Re: Re:A Canonical alternative 246 magisterchessmutt 04-Jan-18 12:13
Re: Re:A Canonical alternative 186 Sirfiroth 07-Jan-18 00:00
Re: Re:A Canonical alternative 190 magisterchessmutt 07-Jan-18 00:46
Re: Re:A Canonical alternative 156 magisterchessmutt 07-Jan-18 07:41
Re: Re:A Canonical alternative 207 cloister 07-Jan-18 09:07
Re: Let there be Phos :) 164 magisterchessmutt 07-Jan-18 16:12
Re: Let there be Phos :) 212 DavidK 07-Jan-18 18:28
Re: Let there be Phos :) 176 magisterchessmutt 07-Jan-18 22:43
Re: Let there be Phos :) 204 DavidK 07-Jan-18 23:09
Re: Let there be Phos :) 178 DavidK 07-Jan-18 23:53
Re: Let there be Phos :) 174 magisterchessmutt 08-Jan-18 03:37
Re: Let there be Phos :) 168 magisterchessmutt 08-Jan-18 04:05
Re: Let there be Phos :) 194 DavidK 08-Jan-18 08:25
Re: Let there be Phos :) 154 magisterchessmutt 08-Jan-18 10:28
Re: Let there be Phos :) 205 DavidK 08-Jan-18 10:59
Re: Let there be Phos :) 145 DavidK 08-Jan-18 11:17
Re: Let there be Phos :) 157 magisterchessmutt 08-Jan-18 12:35
Re: Let there be Phos :) 167 DavidK 08-Jan-18 17:45
Re: Let there be Phos :) 146 DavidK 08-Jan-18 19:43
Re: Let there be Phos :) 210 magisterchessmutt 09-Jan-18 03:46
Re: Let there be Phos :) 164 DavidK 09-Jan-18 18:21
Re: Let there be Phos :) The Scottish mile 174 molder 10-Jan-18 13:33
Re: Let there be Phos :) The Scottish mile 140 molder 10-Jan-18 13:57
Re: Let there be Phos :) The Scottish mile 148 DavidK 10-Jan-18 15:07
Re: Let there be Phos :) 128 DavidK 10-Jan-18 16:38
Re: Let there be Phos :) 159 DavidK 10-Jan-18 16:46
Re: Let there be Phos :) 181 DavidK 10-Jan-18 21:18
Re: Let there be Phos :) 148 molder 11-Jan-18 21:54
Re: Let there be Phos :) 163 magisterchessmutt 12-Jan-18 10:29
Re: Let there be Phos :) 157 DavidK 12-Jan-18 11:17
Re: Let there be Phos :) 132 DavidK 12-Jan-18 10:40
Re: Let there be Phos :) 130 magisterchessmutt 12-Jan-18 12:01
Re: Let there be Phos :) 176 DavidK 12-Jan-18 13:06
Re: Let there be Phos :) 131 DavidK 12-Jan-18 12:06
Re: Let there be Phos :) 151 magisterchessmutt 12-Jan-18 12:25
Re: Let there be Phos :) 198 DavidK 12-Jan-18 14:16
Re: Let there be Phos :) 158 magisterchessmutt 13-Jan-18 11:34
Re: Let there be Phos :) 140 DavidK 13-Jan-18 12:04
Re: Let there be Phos :) 152 magisterchessmutt 13-Jan-18 12:31
Re: Let there be Phos :) 231 DavidK 13-Jan-18 12:47
Let there be Phos at the GP 235 DavidK 17-Jan-18 15:13
Re: Let there be Phos :) 153 DavidK 22-Mar-18 22:50
Re: Let there be Phos :) 192 magisterchessmutt 27-Mar-18 21:19
Re: Let there be Phos :) 201 DavidK 07-Apr-18 20:01


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