March 6, 2026
When entering the Florence Cathedral, most visitors immediately rush their gaze toward Brunelleschi’s Dome. But if you turn around and look above the main portal, you will find a 15th-century wonder of art and engineering: the monumental clock painted by Paolo Uccello in 1443. Why this clock challenges our logic:
• The "Italic Hour": You will immediately notice the hand moves counter-clockwise. This isn't a mistake; it follows the "Italic time" (or Hora Italica), where the 24th hour doesn't strike at midnight, but at sunset.
• Calculating Daylight: In the Renaissance, sunset marked the end of the day and the beginning of the next. This system was vital for both civil and religious life, allowing citizens to know exactly how many hours of daylight remained before dark.
• A Masterpiece of Perspective: Paolo Uccello painted the four heads of prophets (or evangelists) in the corners using the geometric perspective that made him famous, perfectly complementing the Gothic architecture of the cathedral.
A Detail for True Connoisseurs While the construction workers of the Dome (completed in 1436) followed the rhythm of the Martinella—the famous bell that signaled the start and end of the work shifts—this clock represents how Florence was redefining the concept of time and space in the mid-1400s. It is a hidden gem that most tourists ignore. With Itinerantour, we rediscover these secrets together. Want to discover the hidden secrets of the Duomo and the details that escape the crowds? [Book my Florence Art Tour here]
