In MongoDB, the $week aggregation pipeline operator returns the week of the year for a date as a number between 0 and 53.
When using the $week operator, you can optionally specify a timezone to use for the result.
The $week operator accepts either a date (as either a Date, a Timestamp, or an ObjectId), or a document that specifies the date and timezone to use.
In MongoDB, the $year aggregation pipeline operator returns the year portion of a given date.
When using the $year operator, you can optionally specify a timezone to use for the result.
The $year operator accepts either a date (as either a Date, a Timestamp, or an ObjectId), or a document that specifies the date and timezone to use.
In MongoDB, the $isoWeekYear aggregation pipeline operator returns the ISO week-numbering year for a given date value. This is the year number in ISO 8601 format.
When using the $isoWeekYear operator, you can optionally specify a timezone to use for the result.
The $isoWeekYear operator accepts either a date (as either a Date, a Timestamp, or an ObjectId), or a document that specifies the date and timezone to use.
In MongoDB, the $isoWeek aggregation pipeline operator returns the week number in ISO 8601 format, ranging from 1 to 53.
When using the $isoWeek operator, you can optionally specify a timezone to use for the result.
The $isoWeek operator accepts either a date (as either a Date, a Timestamp, or an ObjectId), or a document that specifies the date and timezone to use.
In MongoDB, the $isoDayOfWeek aggregation pipeline operator returns the weekday number in ISO 8601 format, ranging from 1 (for Monday) to 7 (for Sunday).
You can optionally specify a timezone to use for the result.
The $isoDayOfWeek operator accepts either a date (as either a Date, a Timestamp, or an ObjectId), or a document that specifies the date and timezone to use.
In MongoDB, the $dayOfWeek aggregation pipeline operator returns the day of the week for a date as a number between 1 (Sunday) and 7 (Saturday).
You can optionally specify a timezone to use for the result.
The $dayOfWeek operator accepts either a date (as either a Date, a Timestamp, or an ObjectId), or a document that specifies the date and timezone to use.
In MongoDB, the $dayOfMonth aggregation pipeline operator returns the day of the month for a date as a number between 1 and 31.
You can optionally specify a timezone to use for the result.
The $dayOfMonth operator accepts either a date (as either a Date, a Timestamp, or an ObjectId), or a document that specifies the date and timezone to use.
In MongoDB, the $dayOfYear aggregation pipeline operator returns the day of the year for a date as a number between 1 and 366.
You can optionally specify a timezone to use for the result.
The $dayOfYear operator accepts either a date (as either a Date, a Timestamp, or an ObjectId), or a document that specifies the date and timezone to use.
In MongoDB, when you update documents that contain arrays, you have the option of using the arrayFilters parameter.
The arrayFilters parameter allows you to specify an array of filter documents that determine which array elements to modify.
In the update document, use the $[<identifier>] filtered positional operator, which identifies the array elements that match the arrayFilters conditions for the update operation.
In MongoDB, the $currentDate operator sets the value of a field to the current date.
It can be set as either a Date or a timestamp type. The default is Date.
$currentDate is an update operator, and can only be used when updating documents, not when inserting them (although it can be used in upsert operations).