The history of the Bengali Calendar holds a vital place in the Bengali culture in both Bangladesh and West Bengal, India. In both words and numbers, this timekeeper tells a tale of change that goes back centuries. This article looks at where it started, its journey through history, and the ways it transformed to become what it is today. Let’s uncover the captivating story of how the Bengali Calendar began, influenced cultures, and still marks important times today. Historical Evolution of the Bengali Calendar The origins of the Bengali calendar can be traced back to ancient Hindu calendar systems and the practice of timekeeping in the Indian subcontinent. Jyotisha, one of the six ancient Vedangas, focused on observing and predicting celestial movements to track time accurately. Within this context, the Hindu Vikrami calendar, named after King Vikramaditya and starting from 57 BCE, played a role in shaping timekeeping practices. In rural Bengali communities, the Bengali calendar, credited to "Bikromaditto," held significance. Various dynasties that held sway over Bengal prior to the 13th century used the Vikrami calendar. Buddhist texts and inscriptions from the Pala Empire era referenced months such as Ashvin. They align with Sanskrit texts from different regions of the Indian subcontinent. Read more: Top 10 Historic Places, Landmarks in Dhaka Hindu scholars engaged in rigorous calculations to track the cycles of celestial bodies. Sanskrit astronomical texts, spanning centuries, contributed to this effort. The works of Aryabhata, Latadeva, Varahamihira, Brahmagupta, and Lalla presented calculations of planetary motions and characteristics. Surya Siddhanta, with a completion date ranging up to the 10th century, contained vital insights into solar calculations. The foundation of the current Bengali calendar, as used in Indian states like West Bengal, Tripura, Assam, and Jharkhand, can be traced back to the Sanskrit text Surya Siddhanta. Modifications introduced during the reign of Shashanka, the first independent ruler of Gauda, enriched this version. The calendar's historical connection to Shashanka's ascension to sovereignty corresponds with the inception of the Bangabda era. This calendar retains the original Sanskrit month names, with Baishakh as the first month. This anchored it to the Hindu calendar system and governed the timing of Bengali Hindu festivals. Additionally, it's theorized that Alauddin Husain Shah, a Hussain Shahi Sultan of Bengal, might have amalgamated the lunar Islamic calendar with the solar calendar. Alternatively, the calendar could have originated from Emperor Shashanka or Nawab Murshid Quli Khan's fiscal policies during Mughal rule. In the Mughal period, land taxes were collected from the Bengali populace based on the Islamic Hijri calendar, which followed a lunar cycle. This misalignment with the solar agricultural cycle, prompting the need for calendar reform. Mughal Emperor Akbar took up the task, commissioning the creation of a new calendar that integrated elements from both the lunar Islamic and solar Hindu calendars. The resultant "Fasholi shan," or harvest calendar, marked the potential starting point of the Bengali calendar. Read more: 100 Years of Rocket Paddle Steamer: A Pride and Heritage of Bangladesh Development and Transformation of the Bengali Calendar The "Tarikh-e-Elahi" calendar, introduced during the reign of Mughal Emperor Akbar, represents a pivotal juncture in the evolution of the Bengali calendar. This hybrid calendar was a testament to Akbar's innovative governance approach, aiming to harmonize administrative and fiscal needs with agricultural cycles. By blending elements of the lunar Islamic calendar and the solar Hindu calendar, the "Tarikh-e-Elahi" sought to create a functional timekeeping tool that addressed diverse societal requirements. Notably, Mughal Emperor Shah Jahan's reign brought further refinement to the calendar. His adjustments, which included a seven-day week commencing on Sunday and the synchronization of month names with the Saka calendar, laid the groundwork for the calendar's continued relevance. These modifications not only facilitated tax collection but also transformed the calendar into a cultural reference point for the people of Bengal. Read more: Ukraine: UNESCO World Heritage Sites Recent Changes and Revisions in the Bengali Calendar Recent times have witnessed efforts to modernize and enhance the Bengali calendar's accuracy and functionality. In 2018, Bangladesh embarked on a calendar reform aimed at aligning national days with Western dates. This endeavor resulted in adjustments that included the shifting of Kartik's start and a corresponding delay in the Hemanta season. These modifications illustrate the calendar's responsiveness to contemporary needs and its ongoing relevance. Presently, the year is designated as 1426 in the Bengali calendar. The realignment of national days is a noteworthy outcome of the reform. Key observances such as the Language Martyrs' Day, Independence Day, and Victory Day, commemorated on 21 February, 26 March, and 16 December respectively, will consistently fall on Falgun 8, Chaitra 12, and Poush 1 of the Bengali calendar for the next century. This adjustment ensures that cultural and historical commemorations remain consistent and synchronized. Read more: What Was Bangabandhu Sheikh Mujibur Rahman's Childhood Like? Historical Attempts at Calendar Reform The history of the Bengali calendar is punctuated by notable attempts at reform. Dr. Meghnad Saha's and Dr. Muhammad Shahidullah's efforts in the 1950s and 1963 respectively mark crucial steps towards enhancing the calendar's accuracy and functionality. These initiatives laid the foundation for subsequent improvements and demonstrated a commitment to scientific precision. In 1957, the introduction of the National Calendar in India marked a significant stride in standardizing calendars. This calendar, which amalgamated elements from the Surya Siddhanta and underwent substantial modifications, exemplified the ongoing quest for precision. While not extensively adopted outside official circles, it underscored the importance of regional calendars in cultural and administrative contexts. Read more: Top 10 Historical Mosques in Bangladesh Implementation of Calendar Reform in Bangladesh Bangladesh's journey towards calendar reform gained momentum in 1987. The decision to adopt a more accurate and internationally aligned calendar underscored the country's commitment to modernization and synchronization with global standards. This reform initiative aimed to rectify historical inconsistencies and align the calendar with contemporary expectations. To address these concerns, committees were formed in 1995 and 2015, comprising experts in linguistics, mathematics, physics, and culture. The recommendations of these committees aimed to refine the calendar's accuracy and structure. Proposals such as designating Falgun as a leap-year month and adjusting month lengths were key components of these reform efforts, which sought to blend scientific precision with cultural significance. The culmination of these endeavors resulted in the official preparation of the calendar in 2019. This modernized calendar, rooted in historical heritage yet adapted for the present, serves as a symbol of the nation's commitment to accuracy and cultural continuity. Bottom Line The history of the Bengali Calendar is a captivating journey through time. From its inception to modern reforms, it has remained a crucial aspect of the Bengal region's cultural identity. As the calendar continues to evolve, its resilience and adaptability reflect its enduring significance in shaping the rhythm of life for people across generations. Read more: Top 15 Heritage Sites of Bangladesh