In large pot, combine rhubarb, water, lemon & orange zests and bring to a boil.
Stir constantly over medium high heat. Reduce heat, cover and boil gently until rhubarb is soft, about 10 minutes. Remove from heat and stir in lemon juice and orange juice.
Pour into dampened jelly bag or strainer lined with several layers of cheesecloth set over a deep bowl. Let drip for at least 2 hours, undisturbed.
In clean, large pot combine rhubarb juice and sugar. Heat to 190° F. Stir to dissolve sugar, but do not boil. Remove from heat and skim off foam.
Ladle into hot jars, leave ¼-inch headspace, clean rim, place lids and screw bands.
Place jars in prepared canner, with jars completely under water. Bring to a boil, reduce heat to maintain gentle boil and process for 20 minutes*.
Turn off heat and remove canner lid. Allow jars to sit in canner for 5 minutes before removing.
Set jars on rack or towel out of drafts and allow to cool. Remove screw band, label and store.