Hi @SerbanNitu you need to check on the format of weekDay - Fusion has 2, Excel has 10 formats. format "D" in Fusion (Sun = 0, Sat = 6) seems not supported in Excel. You'll need to add 1 to the Fusion date format. However "E" in Fusion matches "2" in Excel. https://experienceleague.adobe.com/en/d...