I need to convert and update date fields in 12 hrs format in one Collection(demo) through Mongo Db script.

Sample data is given below;

[
  {
    "_id": "dgdjh13233",
    "a": [
      {
        "b": [
          {
            "date": "03/26/2022 23.03 pm"
          },
          {
            "date": "03/26/2022 04.03 pm"
          }
        ]
      }
    ]
  },
  {
    "_id": "dgdjh132365",
    "a": [
      {
        "b": [
          {
            "date": "03/26/2022 22.03 pm"
          },
          {
            "date": "03/28/2022 08.03 pm"
          }
        ]
      }
    ]
  }
]

I need to update date fields for ex "date":"03/26/2022 22.03 pm" to "03/26/2022 10.03 pm". Is there any way to do this throgh scripts or can we find which all the data which are in 24 hrs format so that we can change it manually?

I am trying to fetch data throug scripts which are in 24 hours format but unable to do due to inadeqaute knowledge of mongodb.

db.getCollection("demo").find({},
{
"a.b.date":"$a.b.date",
"_id":NumberInt(0)
}
);