Some international years are followed by the establishment of an annual day on the same theme. I believe this is the case with the International Year of Pulses (2016) and the World Pulses Day (Feb. 10). 

While not advocating such an annual observance for millets, I wanted to take the opportunity now - in case others are thinking about it - to suggest that any such proposal be for a week, and not just a day. One day would seem fully inadequate for the number of millets - which, by the way, is greater than the number of pulses

Another possibility might be for a separate day dedicated to each millet, but that could add a dozen and a half new UN days. A World Millets Week, however, would allow time in each region to focus on different sets of millets that are grown in each world region.

Anyway, just putting that out there,