fix first leg of the day not including the first data point

html/script.js

@@ -6614,7 +6614,7 @@ function legShift(offset, plane) {
     let legEnd = null;
     let count = 0;
 
-    for (let i = 1; i < trace.length; i++) {
+    for (let i = 0; i < trace.length; i++) {
         let timestamp = trace[i][0];
         if (traceOpts.startStamp != null && timestamp < traceOpts.startStamp) {
             continue;
@@ -6681,6 +6681,7 @@ function setTraceDate(options) {
     traceDate.setUTCHours(0);
     traceDate.setUTCMinutes(0);
     traceDate.setUTCSeconds(0);
+    traceDate.setUTCMilliseconds(0);
 
     let tomorrow = (new Date()).getTime() + 86400e3;
     if (traceDate.getTime() > tomorrow) {