
Considering how many references are made in the text to celestial bodies it is amazing that none of the professionals have found common patterns or sequences of events. The three main celestial features are Orion, the sun and the moon. Orion is directly translated in the text, but in the majority of references the constellation is called Osiris. Spell 69 actually states that Orion is Osiris and can also be known by other names.
There are so many names for Orion that it has caused Egyptologists much confusion. The secret to all of these names is the apparent motion of Orion either as an individual constellation or in conjunction with the moon or the sun, or even behind the shape of a mountain ridge as the constellation travels along the horizon.
In respect of the heir, mentioned in Spell 115, this is not an abstract concept, but a means of describing the perceived motion of Orion as seen from Earth. As the Earth spins there is a slow gyroscopic wobble over a period of 26,000 years. At one precessional extreme Orion is at its highest inclination (about 60 degrees). At this time Orion traverses a large part of the sky and fulfills the description of Horakhty the Far-Strider. The apparent daily motion of the constellation at this date is a sine wave as depicted in the graphic below.

At the other precessional extreme some 13,000 years hence, it is at the lowest inclination above the horizon (approximately 15 degrees) and becomes Horus the Falcon. Because the earth has tilted further on its axis the apparent daily motion of Orion has changed. It is now egg shaped and allows for Orion to be called Horus, the bird from the egg.

The change of apparent motion of Orion from sine wave to full rotation is brought to attention in the text. In Spell 169 it states that: ‘...you shall not walk upside down.’
This is a true statement for the apparant motion of Orion until the constellation is under the South Pole. At this point the motion of the Earth makes the constellation appear to revolve and turn upside down as shown below:

From being under the South pole Orion then moves away due to continuing tilt of of the Earth through precession. With Orion now fully rotating, the shape of daily motion combined with the polar grid lines form the familar shape of the implement known as the ankh.

It is shown in the papyrus drawing below being held by the top of the loop as opposed to the bottom of the "T" bar. This is because it is not an implement for use in the hand, such as a sighting device, but a visual symbol.

The Ankh is held by human figures with the same body but different heads. The body is identical to show that it is always Orion. The heads are different to show Orion at various phases during precession, and to identify the position of Orion along the horizon behind a mountain ridge. The shape of this ridge is compared to animal shapes such as the head of a dog.
Spell 140 is the starting point for the astronomy. A specific astronomy event is used as an identifiable moment in time.
‘His eye rests in place upon His Majesty in this fourth hour of the night, on the last day of the second month of winter, and his majesty is happy knowing that he appears as on the first occasion.’
‘His Majesty’ is Orion, and ‘his eye’ - the celestial object that passes through the head of Orion - is the moon. The text indicates that:
The time constraints placed on the position of Orion means that the event is determined by precession and will repeat every 26000 years. How the priests knew the event had occurred previously, I don’t know. There are two options; the last event was witnessed, or it was possible to predict the motion from available knowledge. With computer software it is easy to pinpoint the nearest occurence of this event to our own time. It is four hours after sunset on the 30th January 2770 AD. However, it is the event that is important and not the date.

When a specific moment in the cycle is known the motion of the moon around the earth, and the earth around the sun, will follow a determinable path. With this knowledge a puzzle has been set.
In Spell 149 it states:
‘I am one who celebrates exactly every monthly festival and half festival.’
These are the new and full moon cycles respectively. The puzzle starts with the moon, in partial phase, directly above Orion like the minute hand of a clock. The clock then moves forward to the festival of the new moon (sacred eye). At this festival a number of deities are celebrated. It is not the nature of the gods that is important but their number. There are 21 deities and from the new moon we take the clock forward 21 days. This takes the reader through to 11th March 2770. on this date the moon rises from the horizon at 123 degrees azimuth. The next Spell confirms the basis of the puzzle by taking the clock from the next new moon to the shortest night of 2770. The following three Spells count forward from full moons and new moons to specific days where the sun or moon is at a position of 123 degrees azimuths, a position referred to as the holy gate on the horizon. The total time period covered by these Spells is about 2 years.
The bearing of 123 degrees is also given in the text but not in a way that is obvious. The reference is as follows:
‘I know that field of rushes which belongs to Re; the height of its barley is five cubits, its ear is two cubits and its stalk is three cubits. Its emmer is seven cubits, its ear is three cubits and its stalk is four cubits. They are spirits nine cubits tall who reap it in the Souls of the East.’
This can be read as,
‘I know the sacred place (Field of Rushes) from where the sun comes from. It is 50 and 7 degrees towards the East in the 90 degrees segment between South and East.’
The text does not give it as 57 but splits the numbers. It is done in such a way that the stalks and ears of each plant can be added together again making 5 and 7. There is a reason why the numbers are split. Whereas the first part of the astronomy deals with a bearing along the ground of 123 degrees azimuth (57 degrees from South towards the east) the second part of the astronomy puzzle starts with Orion at 12 degrees above the horizon (5+7=12).