February

February is the second month of the year in both the Julian and Gregorian calendars.

It follows January and precedes March. In the Northern Hemisphere, February serves as the third and final month of meteorological winter. In the Southern Hemisphere, it is the third and final month of meteorological summer. This makes it the seasonal equivalent of August in the Northern Hemisphere. The month is unique because of its length. Most common years contain only 28 days. However, during leap years, the month gains an extra day called a leap day, bringing the total to 29 days.

The mechanics of the calendar determine how February functions. Under the Julian calendar reforms, leap years occurred regularly every fourth year. This system added the 29th day to February to keep the calendar aligned. The Gregorian calendar later introduced slight changes to how leap years are determined. Despite these changes, February still contains 29 days during leap years. This month also exhibits unique astronomical patterns. Because it is so short, February is the only month that can pass without a single full moon. This occurred in 2018 and will not happen again until 2037. Similarly, it is the only month that can have exactly four full seven-day weeks at certain intervals.

Historically, February has occupied different positions in the calendar. The name originates from the Latin term "februa," which means "purification." This refers to a purification ritual held on February 15 in the old lunar Roman calendar. Numa Pompilius added January and February to the Roman calendar around 713 BC. Before this, Romans viewed winter as a monthless period. February was originally the last month of the calendar year. It only became the second month during the time of the decemvirs. In the Middle Ages, the year could begin on March 25 or December 25, but February remained the second month when all twelve months were displayed in order.

Different cultures have used various names to describe the month's character. In Old English, the terms were Solmonath, meaning "mud month," and Kale-monath, named for cabbage. Finnish calls it "helmikuu," meaning "month of the pearl." This describes how melting snow forms ice droplets on branches that look like pearls. In Polish and Ukrainian, the month is called "luty" or "lyutyy," meaning the month of ice or hard frost. Macedonian uses "februari," meaning the month of cutting wood. In Slovene, the name "februar" is related to icicles or Candlemas.

Many traditions and symbols are associated with this time of year. The zodiac signs for February are Aquarius, which lasts until February 18, and Pisces, which begins on February 19. The month has three birth flowers: the violet (Viola), the common primrose (Primula vulgaris), and the iris.

The birthstone is the amethyst.

This purple crystal symbolizes piety, humility, spiritual wisdom, and sincerity. In the sky, several meteor showers can be observed during this month. These include the Alpha Centaurids, the Omicron Centaurids, and the Delta Cancrids.

In modern times, February is marked by many different observances. In the United States and Canada, it is recognized as Black History Month. It is also American Heart Month and National Bird-Feeding Month. Other observances include American Children's Dental Health Month and Turner Syndrome Awareness Month. In the United Kingdom and Ireland, it is LGBT History Month. Various religious traditions also observe specific days, such as the Catholic Month of the Purification of the Blessed Virgin Mary.

Climate patterns in February are also significant for scientific study. In recent decades, the number of warm temperature records in February has outpaced cold temperature records. This trend is occurring over a growing portion of the Earth's surface. Scientists use data adjusted to a reference period of 1850-1900 to track these changes. These changes in global average temperatures provide important information about how the planet is warming. Studying these monthly shifts helps researchers understand broader environmental patterns and long-term climate trends.