The moon orbits the earth every 27 days.

The pressure at the core of the earth is around 27,000 tons per square inch (~370 gigapascals).

The Telefol language of Papau New Guinea uses a base-27 counting system, derived from counting human body parts — the left pinky to the left thumb (1-5); the wrist, lower arm, elbow, upper arm, and shoulder (6-10); the side of the neck, ear, and left eye (11-13); the nose (14); and similarly on the right side in reverse order, from the right eye to the right pinky (15-27)

27 is one of the few “self-locating” strings in Pi. Self-locating strings appear at the position corresponding to their value. Using “zero-based” indexing (counting the number after the decimal place as position number zero, which is customary in computer science), 27 occurs in the 27th and 28th positions.

Hindu astrology divides the sky into 27 Nakṣatras, or lunar mansions: Ashwini, Bharani, Kritika, Rohini, Mrigashīrsha, Ārdrā, Punarvasu, Pushya, Āshleshā, Maghā, Pūrva, Uttara, Hasta, Chitra, Svātī, Viśākhā, Anurādhā, Jyeshtha, Mula, Pūrva Ashādhā, Uttara Aṣāḍhā, Śrāvaṇa, Śrāviṣṭha, Shatabhisha, Pūrva Bhādrapadā, Uttara Bhādrapadā, and Revati.

The diameter of the moon is .272 times that of the earth — approximately 27%.

The Hebrew alphabet has 22 letters, of which five have different forms when used at the end of a word — making 27 distinct letters in all.

A typical human body contains around 7 x 1027 atoms. That’s 7 followed by 27 zeros.

The New Testament contains 27 books — Matthew, Mark, Luke, John, Acts, Romans, 1 Corinthians, 2 Corinthians, Galatians, Ephesians, Philippians, Colossians, 1 Thessalonians, 2 Thessalonians, 1 Timothy, 2 Timothy, Titus, Philemon, Hebrews, James, 1 Peter, 2 Peter, 1 John, 2 John, 3 John, Jude, and Revelation.

Cobalt blue pigment is commonly used in oil painting, because of its extreme color stability. Cobalt is the 27th element.

In Stephen King’s It, the eponymous being returns once every 27 years to feast on little children before going into slumber again.

According to Feng Shui, for economic prosperity, it’s considered good luck to keep 27 identical coins in your house.

The “27 Club” is a pop culture meme describing the many artists who died at age 27 — including Janis Joplin, Jimi Hendrix, Kurt Cobain, Jim Morrison, Jean-Michel Basquiat, Brian Jones, and Amy Winehouse.

In a game of American baseball, each team has 27 outs.

27 is a “Harshad number.” Harshad numbers are divisible by the sum of their parts. The word “Harshad” comes from Sanskrit — harṣa (joy) and da (give) — literally meaning: joy giver.

The English alphabet contains 26 characters. In the seventh century, European monks invented the whitespace character between words, which made reading dramatically easier. Including the whitespace for legibility, the alphabet contains 27 characters.

The Large Hadron Collider is the highest-energy particle collider ever constructed, and considered to be “one of the great engineering milestones of mankind.” Its circumference is 27 kilometers.

In the Platonic dialogue, Timaeus, Plato states that God created the “Cosmic Soul” of the universe using two mathematical strips of 1, 2, 4, 8 and 1, 3, 9, 27, arranged in the shape of an inverted “V.” This shape is known as the “Platonic Lambda,” in which the highest number is 27.

M27 (the “Dumbbell Nebula”) was the first planetary nebula to be discovered — by Charles Messner, in 1764.

According to Incan legend, there were 27 roads leading to the lost city of El Dorado.

The sum of the digits from 2 to 7 ( 2 + 3 + 4 + 5 + 6 + 7 ) is 27.

Saturn reassumes the same position every 27 years. In Astrology, this is called the “Saturn Return,” which occurs between the ages of 27 and 29, and then again at 54. The Saturn Return is said to be a time of reckoning, when people weed out their lives.

27 is a “Smith number.” Smith numbers are composite numbers for which the sum of their digits equals the sum of the digits in their prime factorization.

There are 27 pieces in a Rubik’s Cube.