On Figure 8.16, we show a photograph of the hill, in the slope of which was carved the Petosiris tomb. On this photograph one can distinguish two rectangular holes in the hill slope, which are the entrances into the Petosiris tomb and the Petubastis tomb. The Petubastis tomb was carved right next to the Petosiris tomb. It is also described with all the details in above mentioned work  of Neugebauer, Parker, and Pingree. A zodiac was also found in the Petubastis tomb, but it did not contain any horoscope, so it is impossible to date it astronomically. Nevertheless, since these two tombs were located one next to the another, it is very probable that they were constructed during the same epoch. As the both tombs were definitely constructed during the same time, the astronomical dating of the Petosiris zodiac can also provide us with the information about the age of the Petubastis tomb. The zodiac found in the Petubastis tomb was shown on Figure 2.19 in Chapter 2.
Plans of these two tombs — the Petosiris and Petubastis tombs are shown on Figure 8.15. On this drawing, it is clearly shown that the Petosiris tomb consisted of two chambers — the outer chamber I and the inner chamber II. The zodiacs (P1) and (P2) were painted in color (see Figures 8.17 and 8.20) on the ceilings of these two rooms. The zodiac (P1), which was located in the outer chamber of the Petosiris tomb, is shown on Figure 8.18. We call it simply the outer Petosiris zodiac. The zodiac (P2) painted on the ceiling of the inner chamber, which is shown on Figure 8.19, is called by us the inner Petosiris zodiac.
On Figures 8.24 and 8.21 we present the contour drawings of the outer and the inner Petosiris zodiacs. From these pictures it is clear that both Petosiris zodiacs are of the round type, and from that point of view they are similar to the Athribis zodiacs and the Round Denderah zodiac. Moreover, the dimensions of the Petosiris zodiacs are also comparable with the size of the Round zodiac. These dimensions are: the outer Petosiris zodiac (P1) (see Figure 8.18) 2.34 x 2.63 meters, and the inner Petosiris zodiac (P2) (see Figure 8.19) 2.12 x 2.62 meters10.
One can immediately notice that the inner Petosiris zodiac (P2) contains more details than the outer zodiac (P1). Therefore, it seems that it is the main zodiac for this tomb, probably commemorating the date of the death of the person buried there. On the other hand, the outer zodiac (P1) most likely contains the date of the birth or another secondary date related to that person. Notice
that from the point of view of religious rituals, the death of a person (and not the birth) is considered as the main event. Since the birth date precedes the date of the death, we expect that the outer
Petosiris zodiac (P1) should indicate an earlier date than the inner zodiac (P2). However, we should point out that in our computations we did not introduce any additional requirement related to this issue, and in fact, we have considered all the possible pairs of solutions regardless which one is earlier than other.
Since the both zodiacs were found in the same tomb, the difference of their dates should not be loo large. For the purpose of our computations we allowed 150 years difference between those dates. This restriction was motivated by the assumption that the both zodiacs are related to the life of a one person, which was buried in this tomb. Therefore, the difference between the two dates encoded into the Petosiris zodiacs shouldn't be larger than a human lifespan. In order to make sure that we do not omit any admissible pair of solutions, we extended this time by some margin to 150 years. At the end of our computations, we found out that for any possible variant this difference was always smaller than 50 years. In addition, the dates for the outer zodiac (P1) were always earlier than the dates for the inner zodiac (P2).
It is clear that (see Figures 8.24 and 8.21) the both Petosiris zodiacs are very similar one to another. On the both zodiacs, the zodiacal constellations are arranged around a circle, inside which are located the planetary symbols. All the planets are represented in an unusual for traditional Egyptian zodiacs way — in a form of human busts. The outer zodiac (P1) is partially damaged, but still it is possible to recognize that the same planetary symbols — human images, are shown on the both zodiacs. In this situation, it is completely natural to expect that these two zodiacs are in fact only the parts of a larger artistic composition painted on the walls and ceilings of the Petosiris tomb. The symbolism of the entire composition should be the same in all its fragments and parts. On Figures 8.24, 8.23-8.27, we included a series of photographs showing the murals from the Petosiris tomb. On Figure 8.25, we show for comparison a photograph from the Petubastis tomb. The design of this tomb is much simpler than in the case of the Petosiris tomb, but the style and symbolism are very similar.
We should mention that we have seen a very similar situation in the case of the two Athribis zodiacs. These zodiacs were also painted inside a tomb and their planetary symbolism was also exactly the same. Let us recall that for the Athribis zodiacs the difference between their dates was exactly 38 years. What could be the age of the person that is buried there? So, it is most likely that the Athribis zodiacs contain the dates of the birth and the death of the occupant of the tomb. Regarding the Petosiris zodiacs, their purpose was probably the same as in the case of the Athribis zodiacs — to record the dates of the birth and death.
Let us notice that although we allowed at most 150 years difference between the dates for the Petosiris zodiacs, for all the results that we obtained, this difference was much smaller. We can consider it as one more indication that there was no other purpose of the zodiacs. For example, it could be possible that these zodiacs were associated with two, instead of one, occupants of the tomb — for example two close relatives. Nevertheless, based on our experience with the Egyptian zodiacs (the Athribis, Brugsch's and Petosiris zodiacs) it seems to us that two zodiacs or, two horoscopes on one zodiac, were used by "ancient" Egyptians for the birth and the death of the tomb's owner. We should also clarify that our speculations can be helpful in explaining the obtained results, but they do not have any implications on the computations of these dates.
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