What day of the week was a date?
Quick answer
Enter the date into a calendar algorithm or date library and retrieve its weekday. You can also derive the day of year and ISO week number from the same date.
Why people search old dates
Birthdays, anniversaries, historic events and old memories often become more vivid when you know whether they happened on a Monday, Friday or weekend.
Why EgoTools separates exact maths from estimates
Exact date calculations use calendar arithmetic. Estimates are labelled as estimates, and entertainment results are labelled as entertainment rather than presented as scientific population facts.