scrooge is visited by the ghost of Christmas past.
The age is never mentioned but its assumed that he was about 62 years old
3. The ghosts of Christmas Past, Present, and Future.
He was to be visited at One in the morning
When Marley's ghost visited Scrooge he warned him about the ghosts and his behaviour.
Marley appeared to Scrooge and warned him about changing his behavior. Marley also told Scrooge he would be visited by three ghosts.
Christmas Eve
The Ghost of Christmas Past
The first it is foretold will visit on Chritmas Day at one am, the second the next night at the same time and the thrid the next at the last stroke of 12 mid night. This proves to be wrong as all three visit scrooge on the same night
There were four ghosts that visited Scrooge. The first ghost to come was the ghost of Scrooge's business partner, Jacob Marley. He was followed by three others, the ghosts of Christmas Past, Present, and Yet To Come (a.k.a Future).
3 past, present and yet to come
In total the three Ghosts (plus Marley) visited Scrooge all in one night