Watermelon, pomegranate and nuts are traditional Yalda night treats Source: hamgardi.com   As you might know, December 21st is Winter Solstice which means it`s the longest night in the year. Not many of us would have even noticed! However, for Iranians whose calendar is deeply intertwined with the laws of nature, it`s a big holiday called Yalda Night.   Yalda Night awakes nostalgic feelings  in most Iranians who had seen a more traditional, thorough and more widely celebrated Yalda night at their grandparents` house with all relatives gathered around korsi (a traditional heating device, if I may call it so) sharing sweet memories of the past, reciting poems of Hafez…