May 25, 2018
UF Researchers Release Date Conversion Mobile App for Growers

Researchers at the University of Florida have released a new mobile app to help growers convert back and forth from production week number to calendar date when scheduling crop management and sales events.

The production week number used in horticulture is based on International Organization for Standardization (ISO) rules. Week 1 is the first calendar week of the year that includes a Thursday, the week runs seven days from Monday to Sunday, and there are 52 to 53 production weeks depending on the year.

Date Week is a new mobile app available at that does these date conversions for you. You can access the tool by clicking on the current production week icon on the home page of, or by clicking on Tools at the top right and then selecting “Date Week/Semana Fecha” from the list of calculator apps.

Within the tool, you can convert from Date to Week or vice versa. The app is free and in both English and Spanish. Click on the En/Es button at top right to change language.

The University of Florida provides training on this and other apps in its online extension courses for growers (

Date Week was developed by the University of Florida IFAS Extension with web design by ThomasBaine Ltd. The tool was funded by industry partners in the Floriculture Research Alliance (

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