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Construction and Seasonal Patterns of Islamic Hijri Calendar Monthly Time Series: An Application to Consumer Price Index (CPI) in Pakistan


  • Riaz Riazuddin



Time series data are compiled and analysed in accordance with Gregorian calendar, given its world-wise use. This paper presents a simple method of constructing time series in accordance with Hijri Calendar from an already compiled Gregorian time series. Preliminary seasonal analysis of Hijri time series for CPI in Pakistan provides new insights of price behavior that depends both on Gregorian and Hijri seasonality. A spliced series of monthly CPI from January 1976 to December 2008 spanning 33 Gregorian years (396 Gregorian months) is used to capture a full cycle of 34 Hijri years (408 Hijri months). Method presented is general and can be used to construct and analyse any variable of interest. [SBP WP No. 50]. URL:[].

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  • Riaz Riazuddin, 2012. "Construction and Seasonal Patterns of Islamic Hijri Calendar Monthly Time Series: An Application to Consumer Price Index (CPI) in Pakistan," Working Papers id:4927, eSocialSciences.
  • Handle: RePEc:ess:wpaper:id:4927
    Note: Institutional Papers

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    References listed on IDEAS

    1. Syed Kalim Hyder Bukhari & Abdul Jalil & Nasir Hamid Rao, 2011. "Detection and Forecasting of Islamic Calendar Effects in Time Series Data: Revisited," SBP Working Paper Series 39, State Bank of Pakistan, Research Department.
    2. Riaz Riazuddin & Mahmood ul Hasan Khan, 2002. "Detection and Forecasting of Islamic Calendar Effects in Time series Data," SBP Working Paper Series 02, State Bank of Pakistan, Research Department.
    3. Yucel, Eray M., 2005. "Does Ramadan Have Any Effect on Food Prices: A Dual-Calendar Perspective on the Turkish Data," MPRA Paper 1141, University Library of Munich, Germany.
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