Database
[{"_id":"6307cec82ed2f6578c2c4f5a","01 January 2023 Sunday":[{"date":"01 January 2023 Sunday","location":"Kolkata, India","Sunrise":["06:17 AM"],"Sunset":["05:03 PM"],"Moonrise":["12:52 PM"],"Moonset":["02:08 AM, January 02"]}]}]
Query
db.collection.find({"01 January 2023 Sunday":{$exists:true}})