cosmic-calendar

byBikash Babu

Build a complete Bengali Calendar Android App called "বাংলা পঞ্জিকা" (Bangla Panjika). ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🎯 APP OVERVIEW ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Platform: Android (React Native + Expo) Language: Bengali (বাংলা) throughout the UI Purpose: A digital Bengali almanac (পঞ্জিকা) app showing Bengali dates, Tithi, Nakshatra, festivals, and auspicious timings — similar to the traditional Bengali almanac book but on mobile. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📱 SCREENS & FEATURES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1. HOME SCREEN (হোম): - Show today's Bengali date in large Bengali numerals (e.g., "১৩ বৈশাখ ১৪৩২") - English date below (e.g., "26 April 2025, Sunday → রবিবার") - Panjika info in cards: তিথি | নক্ষত্র | যোগ | পক্ষ - Sunrise (সূর্যোদয়) and Sunset (সূর্যাস্ত) times - Rahukaal (রাহুকাল) in red warning card - Today's festival banner (if any) - Upcoming festivals horizontal scroll strip 2. CALENDAR SCREEN (ক্যালেন্ডার): - Monthly grid calendar with Bengali numerals - Bengali month name as header (বৈশাখ, জ্যৈষ্ঠ...) - Red dot on festival dates - Today highlighted in red circle - Swipe left/right to change months - Tap any date → bottom sheet showing full panjika details for that day 3. FESTIVALS SCREEN (উৎসব): - Full yearly list of Bengali festivals - Filter by: সব | ধর্মীয় | সাংস্কৃতিক | জাতীয় - "আসন্ন উৎসব" (upcoming) section at top - Each card shows: festival name, Bengali date, days remaining - Tap → detailed description 4. SETTINGS SCREEN (সেটিংস): - Panjika system toggle: সূর্য সিদ্ধান্ত / দৃক সিদ্ধান্ত - Language: বাংলা / English - Location: Kolkata (default), Dhaka, Agartala, Guwahati - Notifications: daily panjika, festival reminders - Theme: Light (cream) / Dark (deep red) / System ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🧮 CALENDAR CALCULATION ENGINE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Build a dedicated bengaliCalendar.js utility module with: - gregorianToBengali(date) → Bengali year, month, day, monthName - toBengaliNumeral(number) → Bengali digits (০১২৩৪৫৬৭৮৯) - getTithi(date) → tithi name (প্রতিপদ to অমাবস্যা), paksha - getNakshatra(date) → one of 27 nakshatra names in Bengali - getSunriseSunset(date, lat, lng) → IST times for Kolkata by default - getRahukaal(date) → start and end time based on weekday - getFestivals(date) → list of festivals on that date Bengali months: বৈশাখ জ্যৈষ্ঠ আষাঢ় শ্রাবণ ভাদ্র আশ্বিন কার্তিক অগ্রহায়ণ পৌষ মাঘ ফাল্গুন চৈত্র Bengali numerals: ০ ১ ২ ৩ ৪ ৫ ৬ ৭ ৮ ৯ All 30 Tithis: প্রতিপদ দ্বিতীয়া তৃতীয়া চতুর্থী পঞ্চমী ষষ্ঠী সপ্তমী অষ্টমী নবমী দশমী একাদশী দ্বাদশী ত্রয়োদশী চতুর্দশী পূর্ণিমা/অমাবস্যা ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🎉 FESTIVALS DATABASE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Include complete festival data for 2025-2026 with correct dates: - পহেলা বৈশাখ: April 14, 2025 - রবীন্দ্র জয়ন্তী: May 7, 2025 - জন্মাষ্টমী: August 16, 2025 - বিশ্বকর্মা পূজা: September 17, 2025 - দুর্গাপূজা: Oct 1-4, 2025 - কালী পূজা: October 20, 2025 - লক্ষ্মী পূজা: October 10, 2025 - ভাই ফোঁটা: October 22, 2025 - সরস্বতী পূজা: February 2, 2026 - শিবরাত্রি: February 18, 2026 - দোল পূর্ণিমা: March 3, 2026 - Republic Day: January 26 - Independence Day: August 15 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🎨 DESIGN SYSTEM ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Visual style: Traditional Bengali art meets modern Material Design 3 Colors: - Primary: #C62828 (Bengali vermillion red) - Accent: #E65100 (saffron orange) - Background: #FFF8E1 (warm ivory/cream) - Card bg: #FFFFFF with subtle shadow - Dark mode bg: #1A0505 Typography: - Bengali text: Hind Siliguri font (Google Fonts) - English text: Lora font for headers Design details: - Rounded cards (16dp radius) - Subtle alpona (আলপনা) Bengali folk art SVG pattern in header - Lotus flower motif in app icon and decorations - Smooth animations on card load and page transitions - Bottom tab navigation with Bengali labels ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔔 NOTIFICATIONS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - Daily morning notification at 7 AM: "আজকের পঞ্জিকা" with Bengali date and tithi - Festival reminder 1 day before each festival - Use expo-notifications ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🏗️ TECHNICAL REQUIREMENTS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - Framework: React Native 0.73+ with Expo - Navigation: React Navigation v6 (Bottom Tabs + Stack) - State: React Context + AsyncStorage for settings persistence - Animations: React Native Reanimated - All data dynamic — no hardcoded current dates - Offline-first — works without internet - Target: Android 10+ (API 29+) - App icon: Red circle with Bengali "ক" letter and lotus motif ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📦 DELIVERABLES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1. Complete working React Native project 2. All 4 screens fully functional 3. Bengali calendar calculation engine 4. Festival database (2025-2026) 5. Build-ready APK configuration for Android 6. Clean folder structure with comments