This is something I sometimes have trouble with. I pull a package of meat out of the freezer but don't use it right away when it is defrosted.
Then I wonder, what day did I pull that out? Is it still good? Often I end up throwing stuff away because we didn't use it soon enough.
This infographic from All You should help:
[Source: Daily Savings from All You]
Does that clear things up? I should start labeling things with the date I got them or when I pull them out of the freezer.