Hello @Guntaka_Jeevan_Paul ,

I don’t know if this will work, but before reading data from your collection, you should convert the purchaseDate to one specific type.

you can do so by using ‘$addField’ and ‘$toDate’ operators.
something like this -

{
  $addFields: {
    purchaseDate: {
      $toDate: "$purchaseDate"
    }
  }
}