The date printed on the outer wrapper may be the date of manufacture, which would be two years before the end of warranty date.
Note that the date shown for warranty is only for the warranty of the ink cartridge and not the expiration of the ink cartridge.
The packaging materials used to protect ink cartridges enable a good shelf life.
The ink cartridge that you have is just a year old and would work fine in the printer. There is no exact shelf life as such. However, it is recommended you use the ink cartridge before the end of warranty date mentioned on it.
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