def SECOND(expression):
return {'<STR_LIT>': expression}<EOL>
Returns the second portion of a date as a number between 0 and 59, but can be 60 to account for leap seconds.
See https://docs.mongodb.com/manual/reference/operator/aggregation/minute/
for more details
:param expression: expression or variable of a Date, a Timestamp, or an ObjectID
:return: Aggregation operator