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In case of apocalypse:
The date doesn't matter. What matters is the can.
Push the sides and the can flexes: it's compromised and will go bad soon, likely already bad.
Top/bottom of can is bulged: shit ton of botulism.
If the can looks/feels like what they did in the before-fore times: safe to eat.
I would like to subscribe for more can facts
On old style can openers, there's often a pointy triangle part. You can use that to make a tiny hole in the top of the can, drain the fluid, and even fill it up with water and shake to rinse off something like canned vegetables.
One of the worst things health wise about canned food is the metric shit ton of sodium, so this is a huge help for long term survival.
Except in nuclear apocalypses...
Then you want all the iodized salt you can get. The iodized part mean iodine has been added. Iodine is important because a gland in you neck uses it to make hormones or some shit we need. And humans just don't get enough.
During a nuclear explosion some of the radioactive fallout is a radioactive isotype of iodine, so if your body needs iodine, it's dumbass takes all this radioactive iodine and stores it right there by your head.
So when there's a nuclear explosion, immediately eat as much salt as possible so you're body doesn't fuck you over.