I have a column with dates and times, and an associated column with data for all the dates and times. I want to add every hour of every day to the date/time column, but want the data associated with the times to stay in the row next to the correct time. How would I do this? In the attached file, i want to make coulmns A and B look like Coulnds E and F. I have hundreds (if not thousands) of rows, so i need a way to do this easily. Also, the times are not all evenly spaced or exactly on the hour. I dont need the times to be exactly on the hour or spaced out evenly, but i would like to have at least one time from every hour.

Any suggestions will be appreciated!
DBdate time alter.xlsx