This page is dedicated to various tools designed to help keep yoshon.
Index
Calculation and Conversion Tools
Current Grain Cutoff Dates
See individual cereals and flours for more specific dates, as companies like General Mills and Post have their own mills and their cutoff dates may differ. The following cutoff dates can be used for general items:
- Freshly Baked Goods: SEP 15 2025
- Wheat Flour: SEP 02 2025
- Oat Products: TBA
- Barley Products: TBA
- Most Wheat Products: OCT 01 2025
- Pasta and Noodles: AUG 01 2025
- Beer: NOV 15 2025
- Malt or Barley Malt: DEC 15 2025
- Soy Sauce with Wheat: Yoshon
- Matza & Matza Meal: Yoshon
A complete sheet of the current General Grain Chodosh Cutoff Dates can be downloaded from the Updates & Downloads Page.
Date Converter Tools
Click Here to Use Our New Date Calculator Tools App
Note: If your phone is on “Dark Mode”, set it to “Light Mode” in order to see the text properly on the DateCal App .
Super accurate and lightning fast, this app works in real time, and has the following functions:
ADD/SUBTRACT DATES: This tool helps to calculate Shelf Life times (found under the “Additional Information” tab in a product entry). Shelf Life is the amount of time between a Manufacturing Date and a Best By Date.
ADD: Add a product’s Shelf Life time to a General Grain’s Chodosh Cutoff Date in order to get its Best By date cutoff.
SUBTRACT: Subtract a product’s Shelf Life time from a Best By Date to get the date when it was manufactured.
DATE DIFFERENCE TOOL: Find out the Shelf Life time of a product if it has both a Manufacturing Date and a Best By Date. Shelf Life time is the difference between the two.
JULIAN-GREGORIAN DATE CONVERTER: This tool helps to convert a 3-digit Julian manufacturing date to a regular Gregorian Date (or vice versa) to determine when a product was made. Although companies usually put either a 1 or 2 digit year (YY) or (Y) before or after the 3 digit Julian date, this converter uses YYYY, so be sure to enter a 4 digit year first, or it will likely put a date from the 1900s.
Choose Julian to Gregorian on to figure out a Julian date and put it in MMM/DD/YYYY format.
Choose Gregorian to Julian to change a civil date to a Julian Date DDD YYYY.
This tool also has many other handy functions like samples of Date Formats, finding the current time in other Time Zones, and a Business Day Calculator to find out how many business days are in a given period of time.
Click Here to Go to the Week Number Calculator.
This shows the number of a given week. This form of date is only used on a handful of companies, such as M&M Mars, and Mickeys Beer. It will usually fall in the middle of a lot code.
Explanations for these are found in parenthesis on the product entry’s date code listing in orange.
Click Here to Go to the Ezekiel Lot Code Calculator Tool.
This tool converts Ezekiel lot codes found on their products to a regular Gregorian Date to determine when the product was made. Scroll down the page to the bottom, enter the first 5 characters of the code on the product or its Quik Lock tag, and hit the “Calculate” button.
Regular Year Julian Date Chart
Click on the Calendar to download a pdf version.
Leap Year Julian Date Chart
Click on the Calendar to download a pdf version.
To learn more about how to use these tools, see the page How to Calculate Date Codes.