Sham el-Nessim is observed in Egypt every year on Easter Monday in the Julian calendar, marking the beginning of spring. This public holiday has its origins in Ancient Egypt, dating back approximately 4,500 years, when it was celebrated around the vernal equinox, which signaled the start of the agricultural season. Traditionally, Egyptians would offer foods such as onions, lettuce, and salted fish to their deities to celebrate the arrival of spring and ensure a bountiful harvest. Although the holiday is linked to Easter, it is not considered a religious festival and is celebrated by Egyptians of all faiths. Common customs include picnicking outdoors with family and enjoying traditional foods like fesikh, a dish made from fermented, salted gray mullet. Additionally, colored and decorated eggs, symbolizing new life, play a significant role in the festivities, with people writing wishes on eggs and hanging them in baskets.