Date in Javascript The Div loop does not update properly


I'm trying to generate 3 divs in a for loop and insert the datetime in each iteration . The problem I'm running into is while the function generates the three div's correctly it appends the same time to all 3 div's leaving me (JavaScript newbie) to believe the Date() function is only being executed once . If any we could explain to me what is going on I would greatly appreciate it. Ideally I would like to replace the Date function with graph's and have a graph load in each div.

function gengraphs () {
  for (i=0; i < 3; ++i) {
    var divTag = document.createElement("div"); ="1000px"; ="600px"; = "graph"+i;
    divTag.innerHTML = Date();

    // divTag.appendChild(getGraph(divTag));
    // divTag.innerHTML = getGraph(divTag);

The server is executing the script fast enough (in milliseconds) that the date() returned is not visibly different. Try something to delay or use the increment variable i