Date range query for past 24 hour in Mongo shell

Question

I am setting a cron job to collect results from MongoDB database profiler. I'd like to collect results within a 24 hrs period. I plan to run mongo command with javascript.

Question is, in Mongo shell, how do I write a query to find a date range from 24 hrs ago? Such as:

db.system.profile.find({
    "timestamp" : {
        $lte : <current date & time>,
        $gt : <date & time 24 hrs ago>
    }
})

Answer 1

Found answer here: https://stackoverflow.com/questions/1296358/subtract-days-from-a-date-in-javascript

db.system.profile.find({ 
  "timestamp" : { 
    $lt: new Date(), 
    $gte: new Date(new Date().setDate(new Date().getDate()-1))
  }   
})

Answer 2

db.system.profile.find({ 
 "timestamp" : 
    {     
        $gte:   new Date(new Date().setHours(00,00,00)) ,     
        $lt :  new Date(new Date().setHours(23,59,59)) 
   } 
})

Answer 3

db.collection.find(
        {$and: 
                [
                { "status.code":"DELIVERY_PENDING"},
                {"status.createdDtm": {$lte: new Date().getTime()-(1*60*60*1000) }}
                ]

        }
        )