Wikidata: order by last updated item in specific date time range

Question

I noticed that when a query does not have an 'order by' statement at the end, the results are ordered in a last-updated-first manner.

SELECT ?subjectLabel ?subject WHERE {
  ?subject wdt:P31 wd:Q11424.
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
} LIMIT 50

What if I wanted to control this and get all items that have been updated during the month of April 2021 only? I would like to limit the results in some way but I can't find the proper way of doing that. Thanks for your help!