title: Data Time the action of the first day PANDAS
body: <p>Hi everybody how are you?
  Well today I come with a very complicated question haha.
  My idea is to follow the client. in my dataframe I have a column with data time, another with the person code (ex: 0aie23), in the next column the actions that this person made.
  my idea is to take 'ONLY THE FIRST DAY OF ACTION' of each person. And based on that calculate the common movement made by people on the web.</p>
  
  <p>let's see my example:</p>
  
  <p><a href="https://i.stack.imgur.com/Om5xW.jpg" rel="nofollow noreferrer">enter image description here</a></p>
  
  <p>As you can see in the image, user 000a54b2, performs actions on different days. I just want to stay with the actions of the first day (day 9), the dataframe continues and there are users who perform actions more than one day, I just want to stay the first day.</p>
  
  <p>I would also like to know how I can do to track ... Example .. the highest percentage of users do the following 'ad campaign hit' then 'visited site' then 'viewed product' then 'checkout'. Or maybe most of the first day of action only performs 'viewed product' then 'checkout'. Thank you</p>