No, there is currently no scientific calculation or method available to accurately estimate an individual's exact death date. While various factors such as genetics, lifestyle choices, and medical conditions can influence life expectancy, predicting the precise date of an individual's death is not possible.
Life expectancy estimations are based on statistical data and population trends, which provide average predictions for a group of people. These estimations can vary significantly on an individual basis due to numerous factors that can affect one's lifespan.
It's important to note that life is complex, and there are countless variables that can impact a person's health and longevity. While medical advancements and research can help identify risk factors and promote healthy living, the specific circumstances and events that lead to an individual's death are often unpredictable and unique to their situation.