https://rensrv.com/weekday/1900/01/01/2018-05-30monthly0.5
https://rensrv.com/weekday/1900/01/02/2018-05-30monthly0.5
https://rensrv.com/weekday/1900/01/03/2018-05-30monthly0.5
https://rensrv.com/weekday/1900/01/04/2018-05-30monthly0.5
https://rensrv.com/weekday/1900/01/05/2018-05-30monthly0.5