AWS documentdb documentation change

Service: documentdb · 2026-03-31 · Documentation low

File: documentdb/latest/developerguide/dayOfYear.md

Summary

Added new documentation page for the $dayOfYear operator in Amazon DocumentDB, including syntax, parameters, MongoDB shell examples, and code examples in Node.js and Python with connection strings

Security assessment

This change adds documentation for a new DocumentDB operator but does not address any specific security vulnerability. The code examples include security-relevant connection parameters (tls=true, tlsCAFile=global-bundle.pem) which demonstrate secure connection practices, but this is standard documentation for a feature, not a response to a security issue.

Diff

diff --git a/documentdb/latest/developerguide/dayOfYear.md b/documentdb/latest/developerguide/dayOfYear.md
index 8b1378917..0a88720cf 100644
--- a//documentdb/latest/developerguide/dayOfYear.md
+++ b//documentdb/latest/developerguide/dayOfYear.md
@@ -0,0 +1 @@
+[](/pdfs/documentdb/latest/developerguide/developerguide.pdf#dayOfYear "Open PDF")
@@ -1,0 +3,128 @@
+[Documentation](/index.html)[Amazon DocumentDB](/documentdb/index.html)[Developer Guide](what-is.html)
+
+Example (MongoDB Shell)Code examples
+
+# $dayOfYear
+
+The `$dayOfYear` operator in Amazon DocumentDB returns the day of the year for a date as a number between 1 and 366 (365 in non-leap years).
+
+**Parameters**
+
+  * `expression`: The date field or expression from which to extract the day of the year.
+
+
+
+
+## Example (MongoDB Shell)
+
+This example demonstrates how to use the `$dayOfYear` operator to extract the day of the year from a date field in an Amazon DocumentDB collection.
+
+**Create sample documents**
+    
+    
+    db.weather.insert([
+      {
+        "temperature" : 97.5,
+        "humidity": 0.60,
+        "date" : new Date("2023-03-15")
+      },
+      {
+        "temperature" : 82.3,
+        "humidity": 0.75,
+        "date" : new Date("2023-12-31")
+      }
+    ])
+
+**Query example**
+    
+    
+    db.weather.aggregate([
+      {
+        $project: {
+          dayOfYear: { $dayOfYear: "$date" }
+        }
+      }
+    ]).pretty()
+
+**Output**
+    
+    
+    { "_id" : ObjectId("642b86fc7d8e07af279bbe63"), "dayOfYear" : 74 }
+    { "_id" : ObjectId("642b86fc7d8e07af279bbe64"), "dayOfYear" : 365 }
+
+## Code examples
+
+To view a code example for using the `$dayOfYear` command, choose the tab for the language that you want to use:
+
+Node.js
+    
+    
+    
+    const { MongoClient } = require('mongodb');
+    
+    async function example() {
+      const client = await MongoClient.connect('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false');
+      const db = client.db('test');
+      const collection = db.collection('weather');
+    
+      const result = await collection.aggregate([
+        {
+          $project: {
+            dayOfYear: { $dayOfYear: "$date" }
+          }
+        }
+      ]).toArray();
+    
+      console.log(result);
+    
+      await client.close();
+    }
+    
+    example();
+
+Python
+    
+    
+    
+    from pymongo import MongoClient
+    
+    def example():
+        client = MongoClient('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false')
+        db = client['test']
+        collection = db['weather']
+    
+        result = list(collection.aggregate([
+            {
+                '$project': {
+                    'dayOfYear': { '$dayOfYear': '$date' }
+                }
+            }
+        ]))
+    
+        print(result)
+    
+        client.close()
+    
+    example()
+
+![Warning](https://d1ge0kk1l5kms0.cloudfront.net/images/G/01/webservices/console/warning.png) **Javascript is disabled or is unavailable in your browser.**
+
+To use the Amazon Web Services Documentation, Javascript must be enabled. Please refer to your browser's Help pages for instructions.
+
+[Document Conventions](/general/latest/gr/docconventions.html)
+
+$dayOfWeek
+
+$divide
+
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+
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+
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+
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