So all of the dates are from the various ancient Egyptian calendars. I included some with just epithets listed which I thought pertained to Nut such as “Lady of Stars” and some may pertain to Hethert-Nut (Hathor-Nut) rather than just Nut.
Ellis, Normandi. Feasts of Light: Celebrations for the Seasons of Life based on the Egyptian Goddess Mysteries. Quest Books, 1999.
Morgan, Mogg. The Wheel of the Year in Ancient Egypt. (Mandrake of Oxford, 2011), 177 and 208.