Each calendar day lists several "People Group Clusters". These 125 clusters actually represent over 1,500 individual unreached people groups. The footer along the bottom of each day's entry indicates the 'Affinity Blocks" (families of peoples related by aspects such as religion, culture, history, politics, and geography). The cluster in bold is the main focus for the day, and those following are associated groups within the affinity block.
Please use this calendar as a pattern for each month of the year. For short months, combine remaining days into one so that each unreached people cluster is covered with prayer every month.