diff --git a/pdb-js/src/app/visualization-page/visualization-page.component.html b/pdb-js/src/app/visualization-page/visualization-page.component.html
index 5aaad68..193daeb 100644
--- a/pdb-js/src/app/visualization-page/visualization-page.component.html
+++ b/pdb-js/src/app/visualization-page/visualization-page.component.html
@@ -36,6 +36,7 @@
         <mat-label>Intervals (only bar chart):</mat-label>
         <mat-select [(value)]="intervalUnit">
           <mat-option value="NO_INTERVAL">-</mat-option>
+          <mat-option value="SECOND">second</mat-option>
           <mat-option value="MINUTE">minute</mat-option>
           <mat-option value="HOUR">hour</mat-option>
           <mat-option value="DAY">day</mat-option>
diff --git a/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/Interval.java b/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/Interval.java
index 2059c22..1e45139 100644
--- a/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/Interval.java
+++ b/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/Interval.java
@@ -28,6 +28,8 @@ public class Interval {
 
     private String toDateFormatForBucketer(final IntervalTimeUnit intervalTimeUnit) {
         switch (intervalTimeUnit) {
+        case SECOND:
+            return "yyyy-MM-dd'\\n'HH:mm:ss";
         case MINUTE:
             return "yyyy-MM-dd'\\n'HH:mm";
         case HOUR:
diff --git a/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/IntervalTimeUnit.java b/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/IntervalTimeUnit.java
index a30af50..d8cd732 100644
--- a/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/IntervalTimeUnit.java
+++ b/pdb-plotting/src/main/java/org/lucares/pdb/plot/api/IntervalTimeUnit.java
@@ -3,7 +3,7 @@ package org.lucares.pdb.plot.api;
 import org.lucares.utils.DateBucketUnit;
 
 public enum IntervalTimeUnit {
-    MINUTE, HOUR, DAY, WEEK, MONTH, YEAR;
+    SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, YEAR;
 
     public static boolean isValid(final String value) {
         for (final IntervalTimeUnit e : values()) {
@@ -16,6 +16,8 @@ public enum IntervalTimeUnit {
 
     public DateBucketUnit toChronoUnit() {
         switch (this) {
+        case SECOND:
+            return DateBucketUnit.SECOND;
         case MINUTE:
             return DateBucketUnit.MINUTE;
         case HOUR:
diff --git a/pdb-utils/src/main/java/org/lucares/utils/BeginningOfNextInterval.java b/pdb-utils/src/main/java/org/lucares/utils/BeginningOfNextInterval.java
index f7f7ffb..d039c2e 100644
--- a/pdb-utils/src/main/java/org/lucares/utils/BeginningOfNextInterval.java
+++ b/pdb-utils/src/main/java/org/lucares/utils/BeginningOfNextInterval.java
@@ -19,6 +19,10 @@ public class BeginningOfNextInterval implements TemporalAdjuster {
         result = result.with(startOfInterval);
 
         switch (unit) {
+        case SECOND: {
+            result = result.plus(1, ChronoUnit.SECONDS);
+            break;
+        }
         case MINUTE: {
             result = result.plus(1, ChronoUnit.MINUTES);
             break;
diff --git a/pdb-utils/src/main/java/org/lucares/utils/DateBucketUnit.java b/pdb-utils/src/main/java/org/lucares/utils/DateBucketUnit.java
index d5017b3..a9ce487 100644
--- a/pdb-utils/src/main/java/org/lucares/utils/DateBucketUnit.java
+++ b/pdb-utils/src/main/java/org/lucares/utils/DateBucketUnit.java
@@ -1,5 +1,5 @@
 package org.lucares.utils;
 
 public enum DateBucketUnit {
-    MINUTE, HOUR, DAY, WEEK, MONTH, YEAR;
+    SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, YEAR;
 }
diff --git a/pdb-utils/src/main/java/org/lucares/utils/StartOfInterval.java b/pdb-utils/src/main/java/org/lucares/utils/StartOfInterval.java
index 9fed363..dfca56b 100644
--- a/pdb-utils/src/main/java/org/lucares/utils/StartOfInterval.java
+++ b/pdb-utils/src/main/java/org/lucares/utils/StartOfInterval.java
@@ -18,7 +18,6 @@ public class StartOfInterval implements TemporalAdjuster {
         result = result.with(ChronoField.NANO_OF_SECOND, 0);
         result = result.with(ChronoField.MICRO_OF_SECOND, 0);
         result = result.with(ChronoField.MILLI_OF_SECOND, 0);
-        result = result.with(ChronoField.SECOND_OF_MINUTE, 0);
 
         for (final DateBucketUnit dateBucketUnit : DateBucketUnit.values()) {
             if (dateBucketUnit.compareTo(unit) >= 0) {
@@ -26,6 +25,10 @@ public class StartOfInterval implements TemporalAdjuster {
             }
 
             switch (dateBucketUnit) {
+            case SECOND: {
+                result = result.with(ChronoField.SECOND_OF_MINUTE, 0);
+                break;
+            }
             case MINUTE: {
                 result = result.with(ChronoField.MINUTE_OF_HOUR, 0);
                 break;