Christianfeast day:

Arethas(Western Christianity), Aurelius and Nataliaand companions of theMartyrs of Córdoba., Maurus, Pantalemon, and Sergius, Pantaleon, Seven Sleepers of Ephesus(Roman Martyrology)National Sleepy Head Day(Finland), Theobald of Marly, Titus Brandsma,O.Carm., July 27 (Eastern Orthodox liturgics)

A day honoring various Christian saints in Western and Eastern traditions, paired with Finland's playful National Sleepy Head Day.
Every July 27, Christians celebrate the feast days of saints like Arethas in Western churches and commemorate Aurelius and Natalia of Córdoba, Maurus, Pantalemon, Sergius, Pantaleon, and the Seven Sleepers of Ephesus per the Roman Martyrology. The Eastern Orthodox liturgics also observe the date with special services honoring local and wider church figures. Additionally, Finland observes National Sleepy Head Day, a lighthearted tradition where the last person in the household to wake is playfully doused with water or tossed into a lake. The day also pays homage to Theobald of Marly and Blessed Titus Brandsma, whose contributions to Carmelite spirituality and resistance during turmoil are celebrated. Communities hold masses, processions, and communal gatherings, blending solemn remembrance of martyrdom with playful customs that foster unity.
feast day Arethas Western Christianity Aurelius and Natalia Martyrs of Córdoba Maurus, Pantalemon, and Sergius Pantaleon Seven Sleepers of Ephesus Roman Martyrology National Sleepy Head Day Finland Theobald of Marly Titus Brandsma O.Carm. July 27 (Eastern Orthodox liturgics)

Medical Workers Day(Ukraine)

A professional holiday in Ukraine honoring the contributions of medical and healthcare workers.
Medical Workers Day in Ukraine is observed on July 27 to recognize the dedication and sacrifices of doctors, nurses, and healthcare professionals. Established to highlight their vital role in public health, the day features award ceremonies and conferences on medical advancements. Hospitals and clinics hold open days, blood donation drives, and free health screenings for local communities. Government officials, patients, and advocacy groups express gratitude through tributes, certificates, and public acknowledgments. The occasion fosters solidarity among medical staff and promotes excellence in healthcare delivery across the nation.
Medical Workers Day Ukraine

National Sleepy Head Day(Finland)

An annual Finnish tradition where the last person sleeping is playfully tossed into cold water.
National Sleepy Head Day, celebrated on July 27, is a lighthearted Finnish festival based on the legend of the Seven Sleepers of Ephesus. In cities like Turku, local authorities or volunteers target the ‘sleepiest’ resident and ceremonially push them into the harbor or a river. The playful ritual wakes participants and spectators alike, followed by music, refreshments, and community fairs. Originally intended to encourage industriousness, it has become a popular cultural event drawing visitors nationwide. The day blends folklore, humor, and communal spirit in midsummer celebrations.
National Sleepy Head Day Finland