Inspired by: https://kk.org/ct2/my-life-countdown-1/
$ how-many-days-left -help
-birth string
Birth date (YYYY-MM-DD)
-data-year int
Data year (default 2024)
-sex string
Sex (one of 'f' or 'm')
$ how-many-days-left -birth 1970-01-01 -sex f
Given that you have lived 20,288 days, a lifespan of 55.58 years since your birth on Thursday, January 1 of 1970, and based on the 2024 release of medicaid's average life expectancy for females, you have 10,002 days remaining until reaching your projected lifespan of 82.93 years on Thursday, December 5 of 2052.
Event Date Age
------------------------------------------
Birth: 1970-01-01 0.00 (20,288 days ago)
Today: 2025-07-18 55.58
Death: 2052-12-05 82.93 (10,002 days left)