Every spring, the world seems to awaken with color and life, and for millions of people, this season culminates in the celebration of Easter. Unlike fixed-date holidays, Easter's timing shifts each year, prompting the annual question: "When is Easter?" In 2026, Easter Sunday will be observed on April 5 for most Western Christian churches. However, for those following the Eastern Orthodox tradition, which uses a different calendar calculation, Easter will fall a week later on April 12, 2026.

But the question of "when" is just the beginning. To truly understand Easter, we must explore why its date changes, where its name came from, and how ancient stories and symbols have evolved into the traditions we recognize today.

The "Movable Feast": Why Easter's Date Changes Every Year

Easter is known as a "movable feast," meaning it is not anchored to a specific calendar day like Christmas. Instead, its date is determined by the celestial dance between the sun and the moon. The rule, established by the Roman Emperor Constantine at the Council of Nicaea in 325 AD, is that Easter falls on the first Sunday after the first full moon that occurs on or after the spring equinox.

This astronomical formula links Easter to the Jewish festival of Passover (Pesach), which also follows a lunar calendar and commemorates the Hebrews' exodus from Egypt. The crucifixion of Jesus is believed to have occurred during the Passover festival, creating an enduring connection between the two observances.

For the purposes of this calculation, the Church traditionally fixes the spring equinox on March 21, regardless of the astronomical equinox's actual date. The "first full moon" that follows is then referred to as the Paschal Full Moon—with "Paschal" derived from Pascha, the Latinized Greek word for Passover. In 2026, the astronomical spring equinox occurs on March 20, and the first full moon afterward, often called the "Pink Moon," rises on April 2. Therefore, the following Sunday, April 5, becomes Easter Sunday.

This system explains why Easter can fall on any Sunday between March 22 and April 25 in the Western calendar. Over a 500-year period, the most common dates for Easter are March 31 and April 16, while the rarest date is March 22. The last time Easter fell on March 22 was in 1818, and it won't happen again until 2285.

A Tale of Two Calendars: Western and Eastern Easter

The date discrepancy between Western and Eastern Orthodox Easter stems from a historical divergence in calendars. In 1582, Pope Gregory XIII introduced the Gregorian calendar, a more astronomically accurate refinement of the older Julian calendar, which had been in use since 46 BC. While most of the Catholic world eventually adopted the Gregorian calendar, the Eastern Orthodox Church continues to base its calculations on the Julian calendar for determining the date of Easter. This is why in 2026, Orthodox Easter is celebrated on April 12, and in some years, the gap between the two celebrations can be as wide as five weeks.

The Heart of Easter: Origins and Religious Significance

At its core, Easter is the most important and oldest festival of the Christian year, celebrating the resurrection of Jesus Christ. According to the Gospels, Jesus was crucified by the Roman magistrate Pontius Pilate around 30 CE. His body was placed in a tomb, and on the following Sunday, his followers found the tomb empty, proclaiming that he had been raised from the dead.

This event is the foundation of Christian faith. The resurrection is seen as God's victory over death and a promise of eternal life for those who believe. Jesus' death is understood as an atonement for humanity's sins, and his resurrection as proof of his divinity and the hope of new life for all. The season of Lent, a 40-day period of fasting, prayer, and reflection (not counting Sundays), precedes Easter and commemorates the 40 days Jesus spent fasting in the wilderness. Lent begins on Ash Wednesday, which in 2026 falls on February 18. It culminates in Holy Week, which includes:

• Maundy Thursday: Commemorating the Last Supper Jesus shared with his disciples.
• Good Friday: The solemn day of Jesus' crucifixion.
• Holy Saturday: A day of waiting and reflection, marking the time Jesus lay in the tomb.

What's in a Name? The Etymology of "Easter"

The name "Easter" is unique to English and German (where it is called Ostern). Its origins are a subject of historical debate. The Venerable Bede, an English monk and historian from the 8th century, proposed that the name derived from Eostre, an Anglo-Saxon goddess of spring and fertility, whose festival was celebrated during the month of April. This theory suggests that early Christians may have co-opted pagan spring festivals, infusing them with new meaning.

However, this theory is increasingly challenged by scholars. In most other European languages, the name for the holiday is derived from Pascha, the Greek transliteration of the Hebrew Pesach (Passover). For example, it's Pasqua in Italian, Pâques in French, and Paskha in Greek. An alternative theory suggests the English word may have evolved from the Latin word for dawn, alba, which transformed into eostarum in old German, symbolizing the dawn of the risen Christ.

Beyond the Religious: Symbols, Traditions, and Cultural Celebrations

Over the centuries, Easter has accumulated a rich tapestry of symbols and customs, many of which blend Christian themes with ancient pagan symbols of spring, rebirth, and fertility.

Eggs and the Easter Bunny

The most iconic secular symbols of Easter are the egg and the bunny. For centuries, the egg has been a symbol of new life. For Christians, it also represents Jesus' emergence from the tomb. Decorating eggs is a tradition that dates back to at least the 13th century. The Easter Bunny has more recent origins. Rabbits, known for their prolific breeding, are ancient symbols of fertility. The tradition of a hare bringing eggs is believed to have originated among German Lutherans in the 17th century. German immigrants brought this "Osterhase" legend to Pennsylvania in the 1700s, where children would make nests for the hare to lay its colored eggs, a custom that eventually evolved into the modern tradition of Easter baskets filled with chocolate and candy.

Traditional Easter Foods

Food plays a central role in Easter celebrations, often marking the end of the Lenten fast.

• Lamb: A traditional Easter dish with deep roots. It connects to both the "Lamb of God," a title for Jesus in Christian theology, and the lamb sacrificed during the first Passover.
• Hot Cross Buns: These spiced, sweet buns, marked with a cross, are traditionally eaten on Good Friday.
• Easter Baskets: In many Eastern European cultures, particularly Poland and Ukraine, the tradition of święconka involves bringing a basket of symbolic foods to church for a blessing on Holy Saturday. The basket typically contains a lamb-shaped figurine (symbolizing Christ), bread, eggs, salt, and greenery, each holding deep spiritual meaning.

Public Festivities

In many cultures, Easter is also a time for public celebration. In the United States, the most famous is the White House Easter Egg Roll, a race in which children push decorated eggs across the White House lawn. The tradition was first officially sponsored by President Rutherford B. Hayes in 1878. Another enduring custom is the Easter Parade. Popularized in New York City in the mid-1800s, it was a chance for the well-to-do to stroll along Fifth Avenue after church services, showing off their new spring outfits and elaborate bonnets.

From the complex calculations that determine its date to the layered meanings of its symbols, Easter is a holiday that bridges the ancient and the modern, the sacred and the secular. Whether observed as a profound expression of faith or celebrated as a joyful welcome to spring, it remains a time of renewal, hope, and community.