diff --git a/src/util/time.cpp b/src/util/time.cpp
--- a/src/util/time.cpp
+++ b/src/util/time.cpp
@@ -89,6 +89,13 @@
 template std::chrono::milliseconds GetTime();
 template std::chrono::microseconds GetTime();
 
+template <typename T> static T GetSystemTime() {
+    const auto now = std::chrono::duration_cast<T>(
+        std::chrono::system_clock::now().time_since_epoch());
+    assert(now.count() > 0);
+    return now;
+}
+
 void SetMockTime(int64_t nMockTimeIn) {
     assert(nMockTimeIn >= 0);
     nMockTime.store(nMockTimeIn, std::memory_order_relaxed);
@@ -99,23 +106,15 @@
 }
 
 int64_t GetTimeMillis() {
-    int64_t now = (boost::posix_time::microsec_clock::universal_time() -
-                   boost::posix_time::ptime(boost::gregorian::date(1970, 1, 1)))
-                      .total_milliseconds();
-    assert(now > 0);
-    return now;
+    return int64_t{GetSystemTime<std::chrono::milliseconds>().count()};
 }
 
 int64_t GetTimeMicros() {
-    int64_t now = (boost::posix_time::microsec_clock::universal_time() -
-                   boost::posix_time::ptime(boost::gregorian::date(1970, 1, 1)))
-                      .total_microseconds();
-    assert(now > 0);
-    return now;
+    return int64_t{GetSystemTime<std::chrono::microseconds>().count()};
 }
 
 int64_t GetTimeSeconds() {
-    return GetTimeMicros() / 1000000;
+    return int64_t{GetSystemTime<std::chrono::seconds>().count()};
 }
 
 std::string FormatISO8601DateTime(int64_t nTime) {