An estimated 10,000 to 15,000 people are expected to participate in an open-air religious service in Minsk as part of events marking the 1,025th anniversary of the Christianization of Kievan Rus.
The service on July 29 will be conducted by Russian Orthodox Patriarch Kirill.
Belarusian Metropolitan Filaret and other Orthodox luminaries will also participate in the service, which is being held on the site of the remains of the oldest Orthodox church in the Belarusian capital.
After the service, a memorial plaque will be placed at the site to mark the anniversary.
Grand Prince Vladimir the Great accepted Orthodox Christianity in 988, converting the medieval Slavic state Kievan Rus and laying the Orthodox foundations of Ukraine, Russia, and Belarus.
Based on reporting by Interfax and ITAR-TASS