The Islamic Calendar Generator & Printable Template Maker by RiazHub.com is a free, privacy-first, browser-based digital utility designed to create high-resolution Hijri calendars for home, school, or mosque use. Supporting two full centuries (1300 AH to 1500 AH), this tool combines gold-standard astronomical calculations (Fliegel-Van Flandern Julian Day algorithm) with regional moon sighting offset controls (±2 days) and multiple calculation authorities (Umm al-Qura Saudi Arabia, Egyptian Survey Authority, Karachi Diyanet, and FCNA/Moonsighting Worldwide). Users can automatically highlight Sunnah fasting days (Ayyam al-Beed 13th–15th, Mondays, Thursdays, and Ashura), track lunar moon phases, customize titles and duas, adapt night mode color presets, and export pristine 1-page A4 PDF printables, HD PNG graphics, CSV spreadsheets, and live iCal (.ics) events for Google, Apple, and Outlook calendars.