CELESTIAL Calendar: Astronomy, world calendars & reflection in one Windows app

Hello, Product Hunt! 👋 I built CELESTIAL Calendar to bring learning, personal reflection, and daily routines into one Windows app. Explore astronomy and selected religious and cultural calendars, keep a journal, and create a Daily Ritual canvas that fits your interests. A few ways to use CELESTIAL: 🌌 Explore astronomy alongside your everyday calendar. 🌍 Learn about dates and observances across different traditions. 📓 Record thoughts, intentions, and personal discoveries. 🎨 Make your space your own with customizable themes. 💾 Keep your entries saved locally and export backups. Whether you enjoy studying world traditions, journaling, or making time for reflection, CELESTIAL gives you a place to bring those interests together. I’d love your feedback: which feature would you use most, and what would make CELESTIAL more useful in your day?