Can you post here the exact URL of the query you refer to (without the API_KEY indeed)? Also, it would help us, if you could provide some TMDB IDs of the movies you think shouldn't be returned by that query.

Hi, this the URL of API :

http://api.themoviedb.org/3/discover/movie?api_key=<api-key>&language=en-US&page=1&primary_release_date.gte=2019-04-15&sort_by=primary_release_date.asc&region=US&certification_country=US

AFAIK your problems are caused by:

1/ As for the movies from the future, if you need movies only from the year 2019, you should also add "&primary_release_date.lte=2019-12-31" to cap your query or use the "&primary_release_year=2019" instead.

2/ As for the movies from the past, I can't replicate this problem, but imo it could be that by using the parameter "&region=US", you are getting all movies which were (or will be) released in the US in the specified time span (as defined by "&primary_release_date.gte" - "&primary_release_date.lte" or by "&primary_release_year"), including movies which were in fact premiered earlier outside the US and only in the US were (will be) released in 2019 (typically most of the non-US movies).

3/ As for the incomplete list of movies, again it is most likely caused by the use of "&region=US" which will effectively filter out all movies which don't have entered US release date yet, including movies which were (or will be) released on US.

4/ Also the parameter "&certification_country=US" is useless if you also won't use "&certification" or "&certification.lte"

Source:

• API documentation for the movie discover method: https://developers.themoviedb.org/3/discover/movie-discover