How does Halloween fit into YHWH's calendar?

Today we go over the first mention of YHWH's celebration days and to some Protestant believers it is a surprise. These are first mentioned in Genesis 1.
Nope, Halloween is not on them...but what is listed and where? I want to celebrate on YHWH's party days. Can I do both? Click on the video to see. I pray that you listen to the very end. Shalom