2025 Date Code. Cw mo tu we th fr sa su; The following table shows all iso calendar weeks 2025 from 1 to 53, with their start date beginning on monday and their end date falling on sunday.
Eia weekly date codes the eia program for assignment of date codes provides a standardized method to stamp or mark any or all products to identify the year and week of production. The year 2025 ends on tuesday, december 31st 2025.