Both good answers
Also you can check on the harvest season for each country, for example most Central American coffee earliest harvest might be Oct/Nov but better coffees from higher altitude may not be harvested until the new year. By the time it gets to you, could be say March or April or a few months later.
You can be sure if you have a high altitude central coffee in say December it is almost certainly from the previous year. This is not to say it isn't good, and much depends on storage conditions, but the coffee may have had more snap 6 months earlier.