A person appearing in two different places at the same time is called bilocation. Some in the Catholic Church recognize as another mysterious gift associated withe the special charisma of saints, but there are also other people with this particular ability who have succeeded in letting their astral body travel.
ASTRAL TRAVEL TO TWO PLACES AT ONCE
The astral body is the indestructible body of souls that have ascended to the stars, comprised of miniscule particles. According to Paracelsus, the astral body is a visible source of powerful energy. Meditation and the highest level of mental concentration allow individuals with the requisite abilities to separate the astral body from the physical body and project it, so that they appear in two different places at one time. Parapsychology uses the term ‘ethereal’ to describe everything that takes on a physical form outside the imagination, but cannot be assigned to the material plane. Therefore, the physical manifestations in instances of bilocation are ethereal bodies. Other common designations are ‘doppelganger’ or ‘double.’ There have been individuals, such as English poet and adventurist Lord Byron (1788-1824), who took advantage of both astral projection and the icongraphy of the occult. To establish his image as the Devil incarnate, he hired doppelgangers to make appearances at the same time in different places in Europe, a trick he claimed to have carried out via astral projection.

The English poet and adventurer Lord Byron enjoyed cultivating an image as the incarnation of the Devil. (Source)
RELIGIOUS EXAMPLES OF SIMULTANEOUS PRESENCE IN TWO PLACES
According to psychologists, the numerous examples of bilocation of multilocation among the religious, such as the bilocation of Padre Pio, indicate that deeply relgious people can trigger this phenomenon through their faith. Padre Pio was seen in coutnless places around the world, saving people from accidents or, as in the case of the Italian general Cadorna, preventing suicides. The fact is that Padre Pio never left his monastery, right up until the day he died. Critics and doubters accuse the Catholic Church of overexaggerated expression of piety, calling these accounts a deliberate strategy to fascinate and attract believers through mystery.
The phenomenon of astral travel is familiar to many people as an aspect of near-death experiences (which I will write about later on); however, parapsychology is the field responsible for proving that bilocation and astral travel are genuine. The Catholic Church has commented that all of a proposed saint’s acts are very carefully examined over a long period of time prior to their canonization: witnesses are questioned and accounts corroborated, and only then is a person pronounced a saint. The question remains whether bilocation, which is attributed to so many saints, can thus be considered proven.

Padre Pio never left his monastery, yet he has appeared in multilocations several times. (Source)
If you were interested in this article you might also enjoy reading another of my articles about Levitation.

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