Quarter

$quarter

The $quarter operator extracts the quarter of the year from a date object (0-3).

Input

• A single date object

Output

• The quarter of the year as an integer (0-3, where 0 is Q1)

Examples

Extract Quarter from Date

{
  "$quarter": [
    {
      "$toDate": ["2023-05-15T10:30:00Z"]
    }
  ]
}

Result: 1 (Second quarter, 0-indexed as 1)

Extract Quarter from Field

{
  "$quarter": [
    {
      "$input": "event_date"
    }
  ]
}

Result: The quarter (0-3) of the event_date field