diff --git a/chrono/datetime.cpp b/chrono/datetime.cpp
index e3f3d2d..48f8ec0 100644
--- a/chrono/datetime.cpp
+++ b/chrono/datetime.cpp
@@ -5,7 +5,6 @@
 #include <sstream>
 #include <iomanip>
 #include <stdexcept>
-#include <ctime>
 
 using namespace std;
 using namespace ChronoUtilities;
@@ -35,22 +34,6 @@ inline bool inRangeExclMax(num1 val, num2 min, num3 max)
     return (val) >= (min) && (val) <  (max);
 }
 
-/*!
- * \brief Returns a DateTime object that is set to the current date and time on this computer, expressed as the local time.
- */
-DateTime DateTime::now()
-{
-    return DateTime::fromTimeStamp(time(nullptr));
-}
-
-/*!
- * \brief Returns a DateTime object that is set to the current date and time on this computer, expressed as the GMT time.
- */
-DateTime DateTime::gmtNow()
-{
-    return DateTime::fromTimeStampGmt(time(nullptr));
-}
-
 /*!
  * \class ChronoUtilities::DateTime
  * \brief Represents an instant in time, typically expressed as a date and time of day.
diff --git a/chrono/datetime.h b/chrono/datetime.h
index 5398a80..753f3da 100644
--- a/chrono/datetime.h
+++ b/chrono/datetime.h
@@ -7,6 +7,7 @@
 
 #include <string>
 #include <limits>
+#include <ctime>
 
 namespace ChronoUtilities
 {
@@ -315,6 +316,22 @@ constexpr inline DateTime DateTime::eternity()
     return DateTime(std::numeric_limits<decltype(m_ticks)>::max());
 }
 
+/*!
+ * \brief Returns a DateTime object that is set to the current date and time on this computer, expressed as the local time.
+ */
+inline DateTime DateTime::now()
+{
+    return DateTime::fromTimeStamp(time(nullptr));
+}
+
+/*!
+ * \brief Returns a DateTime object that is set to the current date and time on this computer, expressed as the GMT time.
+ */
+inline DateTime DateTime::gmtNow()
+{
+    return DateTime::fromTimeStampGmt(time(nullptr));
+}
+
 /*!
  * \brief Indicates whether two DateTime instances are equal.
  */