It might be the Julian date (I have no idea where the name comes from) which is just basically January 1st is 001, December 31st is 365, and the rest of the year is between. So this would be around December 15th.
We used it for food expirations on some things at the convenience store I used to work at.
Former grocery manager here. There are companies that purposely sell these weird cryptic date formats. I would always need to go look for their certain code to figure out what it translates to. I can't remember why either other than it's not normal and we just dealt with it.
Some uk supermarkets have started dropping the use by date in favour of codes like this. https://www.bbc.co.uk/news/business-45786012 The article says it’s to reduce waste and that staff will have special training to know when to bin stuff. I imagine the training is in how to read the codes.
Companies are allowed to do this in some nations as long as they also distribute the cipher to grocers. For example, literally every chewing tobacco I've seen. This leads to higher sales because lazy employees don't take the time to check the printout and remove expired product.
Did you know you can store smoked salmon at room temp pretty much indefinitely in an unopened package?
Food storage has gotten really good, all the tricks of smoke, sugar or salt of our ancestors with now radiation sterilization and other cool tricks with science.
All that to say. It's probably fine. You just bought it and I'm sure this was made to last as long as it can as reliably as it can so that they don't lose money.
Most best buy dates are just made up anyways and not based on much. Check for gas build up, a weird odor, extreme discoloration, or foreign objects or growths. That will get you through pretty much every rotten food type without having to taste it.
That's said, where are you shopping that has a mixture of Japanese, Chinese, French, and robot codes?
I looked around the packaging for other clues as suggested by another Lemming but I didn't find anything. In fact I found the same thing printed on the front.
Looks like a Julian date. 349 would reference the 349th day of the year. So assuming this year 2024, it would be best by December 14. Normally it would have the year at the end of the 3 digits (3494) for BB Dec 14 2024. Best guess I have. ¯_(ツ)_/¯
Chinese dates have two word years that equate to animals (see the options on this date converter), but they don't have an 'L' sound, so none of them are going to start with that. No clue unless it's a typo.
L is probably the factory code
J could be the number 9, if A=0, so the last digit of the year.
So a guess would be Dec 14th 2029. Which seems like a long way off.
Unless A=1, that means J=0, so 2020 and it's expired, but maybe 2030.
Damn this one is tough my best guess LJ is like how the manufacturer tracks it internally or something like that and the 349 could be like eat before the 349th day of that year. Again this is just a guess probably contact the manufacturer to be 100% clear what that means.
I mean, is there something to the right? I think not because the français is below so I guess good luck. I'd personally eat it unless you bought it months ago.
As many have said, the numerical digits probably refer to a Julian calendar date. Also to consider, some products list the pack date rather than the expiration date. So it’s possible these were packed in December and are already “expired”.