Does Arizona green tea have an expiration date?

As in all things intended for human consumption, Arizona products also contain an expiration date. The difference between Arizona products and most other products is the way that Arizona displays it's dates. Arizona presents the consumer with a "manufactured on" date depicted in such a way that a calculator, a calendar and problem solving skills are required to decipher the expiration date. The date is either 5 or 6 characters (depending on the day of the year that particular product was created) located either on the bottom or near the twist cap. The first character will be a letter, this is to be disregarded. The last two numbers are the abbreviated year of manufacture and the numbers between the year and the letter (at the beginning) represent the number of day in the year that the product was manufactured. For example if the container says "M16311", then I know that this particular product was created on June 12, 2011, the 163rd day of '11 or 2011 . Depending on the type of container the product is in determines how long until it is technically expired. Glass and cans, unopened, last 24 months; and opened with refrigeration, 7 to 10 days, but only 2 to 4 without refrigeration. The only difference with the plastic gallon jugs is that instead of being good for 24 months, they're only good for 18 months: the rest is exactly the same (7-10 & 2-4).