This calendar is built from a compilation and crossreferencing of calendar information. The set point of Wep Ronpet was determined through a painstaking quantity of mathematics in order to find something that approximated its date and was location-neutral. The calendar does not (yet?) include all festivals for which I have references, only those which have some consistency across multiple calendars. The references currently used to produce this calendar are:
The Cairo Calendar, found in Bob Brier's "Ancient Egyptian Magic".
All surviving temple calendars, as collected in Sherif El-Sabban's "Temple Festival Calendars of Ancient Egypt".
Normandi Ellis's "Festivals of Light". (This is a secondary-source reference, and thus not authoritative.)
Robert Ritner's "The Mechanics of Ancient Egyptian Magical Practice"
In addition to this solar year-oriented calendar, there was a regular set of lunar festivals held each lunar month, according to the names of the days of that month. The lunar month begins the day of the new moon.
The fourth day of the month is "The Day of the Going-Forth of the Sem Priest"
The fifth day of the month is "The Day of Offerings on the Altar"
The sixth day of the month (the day before the first quarter) is simply called "Sixth Day", and it is mentioned as a festival in the Book of Going Forth By Day.
The eighteenth day of the month (three days after the full moon) is "The Day of the Moon", and thus an appropriate day to honor lunar gods.
The twenty-eighth day of the month (thirteen days after the full moon; five days after last quarter) is "The Jubilee Festival of Nut".
The thirtieth day of the month is "The Day of the Going-Forth of Min". This may coincide with the new moon on 29-day lunar months.
These lunar celebrations are drawn from Richard A. Parker's "The Calendars of Ancient Egypt".