Each lot code is in the format of WWYYJJJ.
WW: 1 or 2 letters of manufacturing location
YY: 2 digit year code
JJJ: 3 digit Julian day. Progressive numbering
starting with 001 (Jan 1st) to 365 (Dec 31st) or 366 in a leap year.
This product was made on the 34th day of 2020, or February 3, 2020.
Some aerosol products will also have a fabricated date (FAB), which can be read in the format DDMMYY.