diff --git a/src/test/util_tests.cpp b/src/test/util_tests.cpp
--- a/src/test/util_tests.cpp
+++ b/src/test/util_tests.cpp
@@ -149,9 +149,17 @@
         "1feae06279a60939e028a8d65c10b73071a6f16719274855feb0fd8a6704");
 }
 
-BOOST_AUTO_TEST_CASE(util_FormatISO8601DateTime) {
+BOOST_AUTO_TEST_CASE(util_FormatParseISO8601DateTime) {
     BOOST_CHECK_EQUAL(FormatISO8601DateTime(1317425777),
                       "2011-09-30T23:36:17Z");
+    BOOST_CHECK_EQUAL(FormatISO8601DateTime(0), "1970-01-01T00:00:00Z");
+
+    BOOST_CHECK_EQUAL(ParseISO8601DateTime("1970-01-01T00:00:00Z"), 0);
+    BOOST_CHECK_EQUAL(ParseISO8601DateTime("1960-01-01T00:00:00Z"), 0);
+    BOOST_CHECK_EQUAL(ParseISO8601DateTime("2011-09-30T23:36:17Z"), 1317425777);
+
+    auto time = GetSystemTimeInSeconds();
+    BOOST_CHECK_EQUAL(ParseISO8601DateTime(FormatISO8601DateTime(time)), time);
 }
 
 BOOST_AUTO_TEST_CASE(util_FormatISO8601Date) {
diff --git a/src/util/time.h b/src/util/time.h
--- a/src/util/time.h
+++ b/src/util/time.h
@@ -40,5 +40,6 @@
  */
 std::string FormatISO8601DateTime(int64_t nTime);
 std::string FormatISO8601Date(int64_t nTime);
+int64_t ParseISO8601DateTime(const std::string &str);
 
 #endif // BITCOIN_UTIL_TIME_H
diff --git a/src/util/time.cpp b/src/util/time.cpp
--- a/src/util/time.cpp
+++ b/src/util/time.cpp
@@ -99,3 +99,19 @@
     return strprintf("%04i-%02i-%02i", ts.tm_year + 1900, ts.tm_mon + 1,
                      ts.tm_mday);
 }
+
+int64_t ParseISO8601DateTime(const std::string &str) {
+    static const boost::posix_time::ptime epoch =
+        boost::posix_time::from_time_t(0);
+    static const std::locale loc(
+        std::locale::classic(),
+        new boost::posix_time::time_input_facet("%Y-%m-%dT%H:%M:%SZ"));
+    std::istringstream iss(str);
+    iss.imbue(loc);
+    boost::posix_time::ptime ptime(boost::date_time::not_a_date_time);
+    iss >> ptime;
+    if (ptime.is_not_a_date_time() || epoch > ptime) {
+        return 0;
+    }
+    return (ptime - epoch).total_seconds();
+}
diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -20,29 +20,12 @@
 #include <wallet/wallet.h>
 
 #include <boost/algorithm/string.hpp>
-#include <boost/date_time/posix_time/posix_time.hpp>
 
 #include <univalue.h>
 
 #include <cstdint>
 #include <fstream>
 
-static int64_t DecodeDumpTime(const std::string &str) {
-    static const boost::posix_time::ptime epoch =
-        boost::posix_time::from_time_t(0);
-    static const std::locale loc(
-        std::locale::classic(),
-        new boost::posix_time::time_input_facet("%Y-%m-%dT%H:%M:%SZ"));
-    std::istringstream iss(str);
-    iss.imbue(loc);
-    boost::posix_time::ptime ptime(boost::date_time::not_a_date_time);
-    iss >> ptime;
-    if (ptime.is_not_a_date_time()) {
-        return 0;
-    }
-    return (ptime - epoch).total_seconds();
-}
-
 static std::string EncodeDumpString(const std::string &str) {
     std::stringstream ret;
     for (const uint8_t c : str) {
@@ -699,7 +682,7 @@
             }
             CKey key = DecodeSecret(vstr[0]);
             if (key.IsValid()) {
-                int64_t nTime = DecodeDumpTime(vstr[1]);
+                int64_t nTime = ParseISO8601DateTime(vstr[1]);
                 std::string strLabel;
                 bool fLabel = true;
                 for (size_t nStr = 2; nStr < vstr.size(); nStr++) {
@@ -721,7 +704,7 @@
             } else if (IsHex(vstr[0])) {
                 std::vector<uint8_t> vData(ParseHex(vstr[0]));
                 CScript script = CScript(vData.begin(), vData.end());
-                int64_t birth_time = DecodeDumpTime(vstr[1]);
+                int64_t birth_time = ParseISO8601DateTime(vstr[1]);
                 scripts.push_back(
                     std::pair<CScript, int64_t>(script, birth_time));
             }