Be careful: If the result of dateDifference is less than 1 day, there will not be any “day” in the result. The result may be something like “12:57:47.2544602”, which is 12hr 57min 47second difference. The array [x] will not give you “fix” result. You may need to do some processing to get day hour min sec correctly.
If we select the date time in list rows action is iso format then the column of all the date should be changed into iso 8601 format but if 1 column doesn't convert into 8601 format then what could be the reason? Thanks