Is mandala 40 or 48 days?

Excuse me, but I'm a bit confused about the timeline mentioned. Could you please clarify whether the mandala in question is referring to a specific period of time that's either 40 days or 48 days? Is this a traditional or cultural reference I'm not familiar with? Could you elaborate on the context in which this question arises? I'd appreciate any additional details that could help me understand the significance of this inquiry.