On a video that I did today on YouTube, called Thoughts on Samhain discussing these exact same sentiments Ginger Fyre whose blog you can check out here, commented in regards to Samhain being practiced on the full moon "that it [Halloween or Samhain] is or was probably [celebrated in the past in] a more fluid time of full moon occurrence rather than a set date". I totally, totally agree I think that Samhain is not linked to one date of the Gregorian Calendar (our current secular calender) but rather to the lunar cycles of old.
This is not to say this it is incorrect to celebrate your witchy New Year tomorrow, by all means if that feels right for you then go for it, one hundred percent. However, for me celebrating Samhain tomorrow just doesn't feel right it feels like, for lack of a better comparison, celebrating the full moon when it is still waxing.
So tomorrow night, because I live in an area where I don't expect any trick-or-treaters I am going to celebrate a secular Halloween of sorts (with daily magic). I am going to carve a pumpkin and watch scary movies and eat chocolate with the wonderful man in my life. Then, in about a week's time around November 6th when the moon is full I will have my Samhain celebration.