Jyotirvidabharanam (Kalidasa)

Now, with the Vrittatilaka A poetic meter, or possibly a reference to a specific treatise on prosody used here to structure the astronomical rules, he explains the Jovian measurement Guru-mana: time calculated based on Jupiter’s movement; Jupiter is called "Guru" in Sanskrit. Regarding the measurement of the years, it is said that the cycle of sixty years—beginning with Prabhava—was remembered by the great sages. These years are categorized as Samvatsara, Parivatsara, Idavatsara, Anuvatsara, and...

...this refers to the transit of Jupiter original: "Guru" through a single zodiac sign Rashi: one of the twelve signs of the zodiac, such as Aries or Taurus. Thus, the names are as follows: (1) Prabhava, Vibhava, Shukla, Pramoda, then Prajapati, Angirasa, Shrimukha, Bhava, Yuva, Dhatri (8). The numbers in the text likely serve as counting markers for the years in the sequence. Then Bahudhanya, Pramathi, Vikrama, and those named Vrisha; Chitrabhanu, Subhanu, Tarana, Parthiva, and Avyaya (5). Then Sarvajit, Sarvadhari, Virodhi, Vikrita, Khara, Nandana, Vijaya, Jaya, and Manmatha (10). Then Durmukha, followed by the one named Hemalamba, Vilambi, Vikari, Sharvari, and Plava (11).

Then Shubhakrit, after that Shobhanakrit, then Krodhi, Vishvavasu, Parabhava, Plavanga, Kilaka, Saumya, and Sadharana (27). Then Virodhakrit, Paridhavi, Pramadi, Ananda, Rakshasa, Anala, Pingala, Kalayukta, Siddhartha, Raudra...

...up to Udvatsara, the Brahmin should know these as the years. According to the Abhidhyana Chintamani A famous 12th-century lexicon by the scholar Hemachandra, the Jovian measurement is defined by the transit of Jupiter through a single zodiac sign. The duration of this transit is always considered to be one year. Thus, (1) now, the names of the sixty years are explained, beginning with Prabhava...