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+You can get day name for tomorrow (and and other day after that) by inserting the inserting the following formula into the watch script and calling it when needed
+     function dwplus(daystring,n)
+        local days = 'SunMonTueWedThuFriSat'
+        local found = string.find(days, daystring)
+        local new = 1+((3*n + found-1)%21)
+        return string.sub(days,new,new+2)
+     end
+So, if today is Sunday, dwplus('{ddw2}',1) will return "Mon"
+Note that this only works in English--you need to change the string days if you are working in another language.