Accessibility of hiking trails in Nepal during December
I'm planning on Annapurna base camp or Manaslu circuit trek in December (mostly the end of December). I know December is the winter season in Nepal and is expected to be quite cold at that time. Has anyone done either of these trails? The details on the internet aren't that great. Would appreciate if someone who has been on either of these has details regarding the accessibility of these routes in December.
PS: Would love to know if there are other trails which are accessible during December. I'm open to suggestions :)
PPS: Accessibility involves the possible need for equipment to make the hike happen (say ropes and ice axes and all) which in a normal Nepal season would not be required.