Personally, I prefer to avoid usage of client-side javascript processing / 3rd party library like moment.js to avoid inconsistency of timezone processing between client side and server side.

1. range-based query

db.collection.find({
  "createdAt": {
    $gte: ISODate("2012-01-12T00:00:00Z"),
    $lt: ISODate("2012-01-13T00:00:00Z")
  }
})

2. constructed date range with $dateFromParts

db.collection.find({
  $expr: {
    $gte: [
      "$createdAt",
      {
        "$dateFromParts": {
          "year": 2012,
          "month": 1,
          "day": 12
        }
      }
    ]
  }
})

3. get range with date difference(example is 15 years before current date)

db.collection.find({
  $expr: {
    $gte: [
      "$createdAt",
      {
        "$dateSubtract": {
          "startDate": "$$NOW",
          "unit": "year",
          "amount": 15
        }
      }
    ]
  }
})

Personally, I prefer to avoid usage of client-side javascript processing / 3rd party library like moment.js to avoid inconsistency of timezone processing between client side and server side.

1. range-based query

db.collection.find({
  "createdAt": {
    $gte: ISODate("2012-01-12T00:00:00Z"),
    $lt: ISODate("2012-01-13T00:00:00Z")
  }
})

2. constructed date range with $dateFromParts

db.collection.find({
  $expr: {
    $gte: [
      "$createdAt",
      {
        "$dateFromParts": {
          "year": 2012,
          "month": 1,
          "day": 12
        }
      }
    ]
  }
})

3. get range with date difference by $dateSubtract(example is 15 years before current date)

db.collection.find({
  $expr: {
    $gte: [
      "$createdAt",
      {
        "$dateSubtract": {
          "startDate": "$$NOW",
          "unit": "year",
          "amount": 15
        }
      }
    ]
  }
})

Personally, I prefer to avoid usage of client-side javascript processing / 3rd party library like moment.js to avoid inconsistency of timezone processing between client side and server side.

1. range-based query

db.collection.find({
  "createdAt": {
    $gte: ISODate("2012-01-12T00:00:00Z"),
    $lt: ISODate("2012-01-13T00:00:00Z")
  }
})

2. constructed date range with $dateFromParts

db.collection.find({
  $expr: {
    $gte: [
      "$createdAt",
      {
        "$dateFromParts": {
          "year": 2012,
          "month": 1,
          "day": 12
        }
      }
    ]
  }
})

3. get get range with date difference(example is 15 years before current date)

db.collection.find({
  $expr: {
    $gte: [
      "$createdAt",
      {
        "$dateSubtract": {
          "startDate": "$$NOW",
          "unit": "year",
          "amount": 15
        }
      }
    ]
  }
})

Personally, I prefer to avoid usage of client-side javascript processing / 3rd party library like moment.js to avoid inconsistency of timezone processing between client side and server side.

1. range-based query

db.collection.find({
  "createdAt": {
    $gte: ISODate("2012-01-12T00:00:00Z"),
    $lt: ISODate("2012-01-13T00:00:00Z")
  }
})

2. constructed date range with $dateFromParts

db.collection.find({
  $expr: {
    $gte: [
      "$createdAt",
      {
        "$dateFromParts": {
          "year": 2012,
          "month": 1,
          "day": 12
        }
      }
    ]
  }
})

3. get range with date difference(example is 15 years before current date)

db.collection.find({
  $expr: {
    $gte: [
      "$createdAt",
      {
        "$dateSubtract": {
          "startDate": "$$NOW",
          "unit": "year",
          "amount": 15
        }
      }
    ]
  }
})