With Elena's question, Professor Binns' lecture came to an abrupt end.

The clear, melodious voice of the half-breed girl echoed through the classroom, in stark contrast to Professor Binns's previous low, boring lecture – like a cool breeze suddenly pouring into a sweltering room before a summer thunderstorm.

The little wizards, who were originally a little drowsy, suddenly woke up from their trance:

Ron lifted his chin from the cover of the History of Magic, a clear slice of saliva dripping onto the book, Harry slowly removed his glasses and put them back on, Susan's head lifted from her arm, and a red sleep mark appeared on the left cheek, and Hermione ...... Well, Miss Granger, who is an honor student, is still as energetic as ever, but she is not much different from the rest of her classmates at this time.

Gregorian Calendar Year, History of Magic, Time Dimension?

What does that mean......

Hermione Granger frowned, stopped the quill in her hand in confusion, and her gaze wandered between Professor Binns and Elena like a confused little animal—not distracted, but still unintelligible as Elena was asking.

In fact, most wizards may not be able to answer Elena's question at the first time, and they may not even be able to figure out what the girl is asking, and sometimes the more accustomed things are, the more difficult it is to answer.

But Professor Binns was different, he almost stopped the lecture and froze on the podium, looking at the little girl in front of him in surprise.

As a professor of the history of magic that has been around for thousands of years, Professor Binns is well aware of the weight behind the question that the first-year student had just asked, and the infinite number of questions that could arise from it.

The chronological calendar, which is the first cornerstone that anchors all history, is as much a question as it is to trace the origins and development of the entire history of magic.

In other words, if you really want to answer it completely, then the question is too much of an overreach.

Professor Binns blinked.

"That's not what this lesson is about. He whispered in that dry, breathless voice, "We only need to learn some simple historical facts, Miss Caslana, instead of delving into the origins and cornerstones of the history of magic. ”

After a slight pause, Professor Binns looked around at the immature and confused faces, cleared his throat, made a soft sound like the breaking of chalk, and continued to read the lesson plan in his hand in a voice like an old vacuum cleaner.

“...... During that time, the wicked Amerric? (Emeric the Evil) came to the south of England to impose a reign of terror—"

Halfway through the reading, Professor Binns stammered again, his wrinkled face looking blankly ahead.

Elena's raised right hand didn't let it go, and it was now swaying back and forth in mid-air very rhythmically, like Salazar Slytherin's waving staff of the two serpents more than a thousand years ago.

"Miss Kaslana?"

"I'd like to ask you, Professor. Before you started the lesson, you said that the history of magic is a factual subject, and anything that is speculative and unreliable should not be the object of our study. ”

Elena whispered, her tone full of childlike innocence, and her blue eyes flashed with a glimmer of light.

"However, the beginning of the Common Era was based on an ethereal Muggle myth and legend. When we record the past according to the chronicle and try to connect the historical events together, if even the beginning is a legend that people speculate, then how can the derivation derived from it be called [real history]?"

Chronicles, written annales in Latin, means "annals".

This is by far the most objective and accurate way to record history.

In this form of compilation, there is no need for literary aspirations, no attention to particular structural patterns, but only a complete connection between the events of the human and natural history that occur each year and the biographical elements.

When the wizarding world describes and studies history, it uses this classic historical record method.

However, just like the roots of a towering tree, when using chronicles for historical records, choosing what time and time to start with historical events is undoubtedly the most important starting point.

In fact, in the long history of mankind, there may be dozens or even hundreds of ways of dating.

In West Asia, the ancient Babylonian kingdom used the Nabonashar chronology, also known as the Babylonian chronology, which was based on the fourth dynasty king Nabonashar ascended the throne in 747 BC......

However, of all the chronological systems, the A.D. era is the most special one. (note 1)

Not only is the Gregorian calendar, promulgated by Pope Gregory XIII in 1582, one of the youngest calendars, but it is also one of the very few events at which the beginning (the first year) of the Gregorian calendar is based on pure legend.

Prior to this, there were similar operations in ancient Greece such as the Hellenistic Era (which began with the myth of the founding of the world) and the Mayan Era (which began with the legendary end of the first World Flood).

More crucially, the beginning of the Common Era, the "birth year of the Lord," was ultimately miscalculated—after all, according to the Gospels, Jesus should have been born around 4-6 B.C.E. (note 2)

This is undoubtedly a very embarrassing thing, and one of the more fatal results of this is that there is no reliable historical data as a node for the establishment of the so-called first year of the Common Era.

All of its time anchors are established by the support of the rest of the chronological calendar.

You know, Hogwarts was founded in 993 AD, and before that, Professor Binns was very old.

For the professor of the history of magic, most of the changes in chronology are like experiencing the past.

At Elena's voice, Professor Binns had no more luck in her mind - it was clear that she knew what she was trying to ask.

Professor Binns clumsily closed the note in front of him, and looked up bitterly at Elena.

It was probably the first time in many years that he had observed a student so seriously.

There was no doubt that the first-year witch in front of her was not as innocent and harmless as she seemed - it took a long time for Professor Binns to learn that the real devil is always like an angel.

"Okay. ”

Professor Binns said reluctantly, his translucent gray body appearing to fade.

"Yes, I don't think you're entirely wrong about that. You're right, the chronological description we use now is based on a young product that is not rigorous, and even somewhat comical......"

Accompanied by the old man's dry voice, I don't know if it was an illusion, everyone in the classroom seemed to vaguely hear a faint sigh.

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(The annotation content is free)

NOTE 1: Common Eras are often denoted by A.D. (Latin abbreviation of Anno Domini, meaning "the year of the Lord's birth"), and B.C. is represented by . However, in order to downplay its religious overtones and avoid the resentment of non-Christians, most modern scholars have changed the term Common Era (abbreviated as.) With Before the Common Era (abbreviated as .E.) said.

NOTE 2: "A.D." arose in the 6th century A.D. At that time, in order to expand the ruling power of the church, believers attached almost anything to Christianity. In 525 A.D., a believer named Dionysus, in order to pre-calculate the date of "Easter" seven years later (532 A.D.), put forward the theory that Jesus was born 284 years before the Roman year of Theocles, and advocated a chronological method based on the year of Jesus' birth, which was strongly supported by the church.

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