<h1>Reference rate for US dollar informs cross currency rupee rates and determines the SDR Rupee calculation daily.</h1> The press release publishes the Reserve Bank's daily reference rate for the US dollar, compares it with the prior day's rate, and, using cross currency middle rates, supplies corresponding rupee exchange rates for the euro, pound sterling and Japanese yen; it also states that the SDR Rupee rate is based on this published reference rate.