Bon Pchum Ben was established for buddhist to pay their respects to deceased relatives by cooking meals for monks and making offerings to the "ghost" of deceased relatives. It is also known as "Ancestor's Day".
Bon Pchum Ben usually lasts for 15 days towards the end of September or October. the last three days being the most important. Pchum Ben day is the fifteenth and final day of the Pchum Ben festival with its finale where many families gathering in mass for the festivities at the local Buddhist temple. The days leading up to the last day of Pchum Ben are, however, also of great importance as families visit the pagoda many days, and in some cases every day, for fourteen days prior to the end of the celebration. These days are called Kann Ben and each Kann is numbered up to fourteen. Each morning before sunrise on Kann Ben, traditional foods are prepared for the spirits to enjoy.
បុណ្យកាន់បិណ្ឌ-ភ្ជុំបិណ្ឌ គឺជាបុណ្យប្រពៃណីជាតិខ្មែរ ដែលបុព្វបុរសខ្មែរយើងចាប់ផ្ដើមធ្វើតាំងពីបុរាណ្យកាលរហូតមកដល់បច្ចុប្បន្ននេះ ពុទ្ធបរិស័ទកាន់ព្រះពុទ្ធសាសនា តែងប្រារព្ធធ្វើបុណ្យនេះ ជារៀងរាល់ឆ្នាំក្នុងគោលបំណងដើម្បីឧទិ្ទកុសល ជូនដល់វិញ្ញាណក្ខន្ធបុព្ធការីជន និងញាតិកាទាំង៧សន្តាន ដែលលោកបានបែកកាយទម្លាយក្ខ័ន្ធទៅកាន់បរលោកខាងមុខហើយនោះ និងដើម្បីជាបុណ្យកុសលសម្រាប់ខ្លួនទៅអនាគត់ជាតិផង។