Eternal Mewar

The Eternal Mewar application represents a complex intersection of cultural preservation engineering and computational astronomy. Built on a cross-platform mobile architecture, the system digitizes the intricate calendrical mathematics traditionally maintained by royal pundits of the Mewar court, making them accessible via an intuitive consumer-grade interface.

At the heart of the application lies a custom panchang calculation engine that performs real-time astronomical computations based on user-specific geographic coordinates. The engine implements algorithms derived from Surya Siddhanta and Drik Siddhanta traditions, processing latitude/longitude inputs to generate precise tithi, nakshatra, yoga, karana, and choghadiya muhurats specific to the user's location. The system simultaneously maintains synchronization between four parallel calendar systems—Vikram Samvat (2076-77), Gregorian (2020), Hindu lunar, and traditional Mewar ceremonial calendars.

Data Architecture & Content Management: The application backend manages a structured repository of over 1,500+ historically verified events including royal birth/death anniversaries, ceremonial dates, and dynasty-specific observances. Content undergoes multi-tier verification against palm-leaf manuscripts, royal gazettes, and institutional archives before deployment. The architecture supports dynamic content hydration while maintaining offline accessibility through local SQLite persistence and React Query-powered cache management.

Astronomical Precision Module: The system implements custom JavaScript-based ephemeris calculations for sunrise/sunset determination, tithi indexing, and nakshatra mapping. Users can generate location-specific panchang cards with 17+ data points including Suryoday, Suryast, Goghuli timelines, Rahu Kal windows, and eight-fold choghadiya divisions for both diurnal and nocturnal periods. The computation engine achieves ±30-second accuracy for astronomical events through implementation of VSOP87 planetary theory adaptations.

The interface architecture follows a hierarchical content disclosure pattern—dashboard provides macro-level calendar navigation, monthly views display tithi-grid compositions with embedded astronomical metadata, and deep-linkable event-detail views render comprehensive panchang visualizations. Gesture-based horizontal scrolling enables seamless traversal between Gregorian and Vikram Samvat timelines. The settings module implements persistent state management via Redux Persist for user preferences including default geolocation coordinates, timezone offsets, and language localization tokens.

The application renders digitized archival content including Sanskrit ślokas, Hindi prose from 17th-century court records, and English translations. Typography systems support Devanagari Unicode rendering with proper halant and matra positioning. The preface module documents water conservation engineering by Mewar rulers including technical specifications of Udaysagar and Rajsamudra lake constructions with Vikram Samvat to Gregorian epoch conversion.