Research conducted by Perplexity AI using the following sources:

• Russia's Putin declares a ceasefire in Ukraine for Orthodox Easter
• Russia's Putin announces ceasefire with Ukraine on Orthodox Easter
• Russia’s President Vladimir Putin declares a ceasefire in Ukraine late Saturday through Sunday for the Orthodox Easter
• Putin Announces Orthodox Easter Ceasefire With Ukraine
• Russia and Ukraine agree to Orthodox Easter ceasefire - Le Monde
• Russia's Putin declares a ceasefire in Ukraine for Orthodox Easter
• Putin announces Orthodox Easter cease-fire in Ukraine