I agree - I haven't noticed a "best" time to publish on Medium. Many articles say that weekends are the worst for reads, but I have experienced the exact opposite. Two of my best performing articles were published on a Saturday and a Sunday.

One thing that definitely hurt my views was having 3 articles published in the same hour on the same day - I self published something and then two articles at different publications were published shortly thereafter. I had no idea they would be published that day. My views were low on all three articles because I think the system got ovewhelmed with my words. Lol.