Each one of us is part of a large society surrounded by it. On the other hand, our intellectual mind is part of a body that has many members. Therefore, this mind cannot function independently of the internal environment (the body) or the external (surrounding society), so I do not think that it is possible to determine duration. Today does not resemble yesterday or tomorrow, and even does not look like an hour after now!
Each one of us is part of a large society surrounded by it. On the other hand, our intellectual mind is part of a body that has many members. Therefore, this mind cannot function independently of the internal environment (the body) or the external (surrounding society), so I do not think that it is possible to determine duration. Today does not resemble yesterday or tomorrow, and even does not look like an hour after now!