Is the three days of darkness going to happend on the 21?

The concept of "three days of darkness" is often associated with various religious prophecies and apocalyptic predictions, but there is no scientific evidence or credible sources to support the idea that it will occur on any specific date, including the 21st of any month. Such predictions are typically based on interpretations of religious texts or personal beliefs rather than established facts. It's important to approach such claims critically and rely on verified information.