for HindcastDate in HindcastDate-list (eg, 2010-03-01 to 2010-03-31) S2S-request(HindcastDate) If Youyoumayarealsonothavefamiliarawith the S2S API requests please see look on some CMA re-forecast examples or on ECMWF Web API Home
What is the best approach to get all HindcastDays for several HindcastYears ?