If that were true, then this would be false: https://www.wolframalpha.com/input?i=2019-01-31+to+2015-10-21 https://www.wolframalpha.com/input?i=2019-01-31+to+2

If that were true, then this would be false: https://www.wolframalpha.com/input?i=2019-01-31+to+2015-10-21 https://www.wolframalpha.com/input?i=2019-01-31+to+2015-10-2... = 3 years 3 months 10 days https://www.wolframalpha.com/input?i=2015-10-21+to+2019-01-31 https://www.wolframalpha.com/input?i=2015-10-21+to+2019-01-3... = 3 years 3 months 10 days