When should I buy scallops?

I'm curious, could you please elaborate on the ideal timing for purchasing scallops? Is there a specific season, day of the week, or even time of day that is considered most advantageous? I'd love to know if there are any factors to consider, such as market trends or supply and demand fluctuations, that could help me make a more informed decision. Additionally, are there any best practices or tips you can share to ensure I get the freshest and most value for my money when buying scallops?