remembered by converting them using Kaṭapayādi system. These dates are generally represented as number of days since the start of Kali Yuga. It is sometimes called kalidina sankhya. The Malayalam calendar known as kollavarsham (Malayalam: കൊല്ലവര്‍ഷം) was adopted in Kerala beginning from 825 CE, revamping some calendars. This date is remembered as āchārya vāgbhadā, converted using Kaṭapayādi into 1434160 days since the start of Kali Yuga. Narayaniyam, written by Melpathur Narayana Bhattathiri, ends with the line, āyurārogyasaukhyam (ആയുരാരോഗ്യസൌഖ്യം) which means long-life, health and happiness. This number is the time at which the work was completed represented as number of days since the start of Kali Yuga as per the Malayalam calendar. Others Some people use the Kaṭapayādi system in naming newborns. The following verse compiled in Malayalam by Koduṅṅallur Kuññikkuṭṭan Taṃpurān using Kaṭapayādi is the number of days in the months of Gregorian Calendar. പലഹാരേ പാലു നല്ലൂ, പുലര്‍ന്നാലോ കലക്കിലാം ഇല്ലാ പാലെന്നു ഗോപാലന്‍ – ആംഗ്ലമാസദിനം ക്രമാല്‍ Transliteration palahāre pālu nallū, pularnnālo kalakkilāṃ illā pālennu gopālan – āṃgḷamāsadinaṃ kramāl Translation: Milk is best for breakfast, when it is morning, it should be stirred. But Gopālan says there is no milk – the number of days of English months in order. Converting pairs of letters using Kaṭapayādi yields – pala (പല) is 31, hāre (ഹാരേ) is 28, pālu പാലു = 31, nallū (നല്ലൂ) is 30, pular (പുലര്‍) is 31, nnālo (ന്നാലോ) is 30, kala (കല) is 31, kkilāṃ (ക്കിലാം) is 31, illā (ഇല്ലാ) is 30, pāle (പാലെ) is 31, nnu go (ന്നു ഗോ) is 30, pālan (പാലന്‍) is 31. See also Abjad numerals Aksharapalli Aryabhata numeration Bhutasamkhya system Gematria Greek numerals Kerala school of astronomy and mathematics Madhava's sine table Mnemonic major system Notarikon Temurah (Kabbalah) Alphasyllabic numeral system References Further reading A.A. Hattangadi, Explorations in Mathematics, Universities Press (India) Pvt. Ltd., Hyderabad (2001) Numeral systems Mnemonics Indian mathematics Kerala school of astronomy and mathematics