diff --git a/y2015/http_status/http_status.cc b/y2015/http_status/http_status.cc
index 7d5093a..1b79555 100644
--- a/y2015/http_status/http_status.cc
+++ b/y2015/http_status/http_status.cc
@@ -1,5 +1,6 @@
 #include "y2015/http_status/http_status.h"
 
+#include <chrono>
 #include <iostream>
 #include <sstream>
 #include <string>
@@ -22,6 +23,9 @@
 namespace y2015 {
 namespace http_status {
 
+using ::aos::monotonic_clock;
+namespace chrono = ::std::chrono;
+
 // TODO(comran): Make some of these separate libraries & document them better.
 
 HTTPStatusMessage::HTTPStatusMessage()
@@ -33,13 +37,13 @@
 void HTTPStatusMessage::NextSample() {
   int32_t adjusted_index = GetIndex(sample_id_);
 
-  ::aos::time::Time time_now = ::aos::time::Time::Now();
+  const monotonic_clock::time_point monotonic_now = monotonic_clock::now();
 
   if (sample_id_ < overflow_id_) {
-    sample_times_.emplace_back(time_now);
+    sample_times_.emplace_back(monotonic_now);
     data_values_.emplace_back(::std::vector<double>());
   } else {
-    sample_times_[adjusted_index] = time_now;
+    sample_times_[adjusted_index] = monotonic_now;
   }
 
   sample_id_++;
@@ -122,7 +126,10 @@
 
     int32_t adjusted_index = GetIndex(cur_sample);
 
-    message << cur_sample << "%" << sample_times_.at(adjusted_index).ToSeconds()
+    message << cur_sample << "%"
+            << chrono::duration_cast<chrono::duration<double>>(
+                   sample_times_.at(adjusted_index).time_since_epoch())
+                   .count()
             << "%";
     for (int32_t cur_measure = 0;
          cur_measure < static_cast<int32_t>(data_names_.size());
@@ -216,8 +223,10 @@
 void DataCollector::operator()() {
   ::aos::SetCurrentThreadName("HTTPStatusData");
 
+  ::aos::time::PhasedLoop phased_loop(chrono::milliseconds(5),
+                                      chrono::microseconds(0));
   while (run_) {
-    ::aos::time::PhasedLoopXMS(5, 0);
+    phased_loop.SleepUntilNext();
     RunIteration();
   }
 }
diff --git a/y2015/http_status/http_status.h b/y2015/http_status/http_status.h
index b7b3b4c..7e6383f 100644
--- a/y2015/http_status/http_status.h
+++ b/y2015/http_status/http_status.h
@@ -55,7 +55,7 @@
   // Vectors of vectors to store samples at indexes determined by GetIndex.
   ::std::vector<::std::string> data_names_;
   ::std::vector<::std::vector<double>> data_values_;
-  ::std::vector<::aos::time::Time> sample_times_;
+  ::std::vector<::aos::monotonic_clock::time_point> sample_times_;
 
   int32_t sample_id_;          // Last sample id used.
   int32_t measure_index_;      // Last measure index used.