diff --git a/tests/ttimeutils.nim b/tests/ttimeutils.nim
index c1af792..037c367 100644
--- a/tests/ttimeutils.nim
+++ b/tests/ttimeutils.nim
@@ -14,27 +14,27 @@ suite "timeutils":
   test "DateTime difference":
     var t1 = getTime().local
     var t2 = t1 + 30.seconds
-    check timeutils.`-`(t2, t1) == initDuration(seconds = 30)
+    check t2 - t1 == initDuration(seconds = 30)
 
     t1 = parse("2016-10-10 09:45:00", "yyyy-MM-dd HH:mm:ss")
     t2 = parse("2016-10-11 09:45:00", "yyyy-MM-dd HH:mm:ss")
-    check timeutils.`-`(t2, t1) == initDuration(seconds = 24 * 60 * 60)
+    check t2 - t1 == initDuration(seconds = 24 * 60 * 60)
 
     t2 = parse("2016-10-11 10:00:00", "yyyy-MM-dd HH:mm:ss")
-    check timeutils.`-`(t2, t1) == initDuration(seconds = (24 * 60 + 15) * 60)
+    check t2 - t1 == initDuration(seconds = (24 * 60 + 15) * 60)
 
   test "DateTime comparisons":
     let t1 = getTime().local
 
     check:
-      timeutils.`<`(t1, t1 + 10.seconds)
-      not timeutils.`<`(t1 + 10.seconds, t1)
-      not timeutils.`<`(t1, t1)
+      not (t1 < t1)
+      t1 < t1 + 10.seconds
+      not (t1 + 10.seconds < t1)
+
+      t1 <= t1
+      t1 <= t1 + 10.seconds
+      not (t1 + 10.seconds <= t1)
 
-      timeutils.`<=`(t1, t1 + 10.seconds)
-      timeutils.`<=`(t1, t1)
-      not timeutils.`<=`(t1 + 10.seconds, t1)
- 
       t1.between(t1 - 10.seconds, t1 + 10.seconds)
       t1.between(t1, t1 + 10.seconds)     # start is inclusive
       not t1.between(t1 - 10.seconds, t1) # end is exclusive
diff --git a/timeutils.nim b/timeutils.nim
index 9b37a7c..8442a16 100644
--- a/timeutils.nim
+++ b/timeutils.nim
@@ -33,15 +33,24 @@ proc cmp*(a, b: DateTime): int =
   else: return 1
 
 proc startOfDay*(dt: DateTime): DateTime =
-  result = dt
-  result.hour = 0
-  result.minute = 0
-  result.second = 0
-  result.nanosecond = 0
+  result = initDateTime(
+    dt.monthday,
+    dt.month,
+    dt.year,
+    0, 0, 0, 0, # hour, minute, second, nanosecond
+    dt.timezone)
 
 proc trimNanoSec*(dt: DateTime): DateTime =
   result = dt
-  result.nanosecond = 0
+  result = initDateTime(
+    dt.monthday,
+    dt.month,
+    dt.year,
+    dt.hour,
+    dt.minute,
+    dt.second,
+    0,
+    dt.timezone)
 
 proc startOfWeek*(ti: DateTime, startDay = dMon): DateTime =
   var diff = (ti.weekday.ord - startDay.ord)
diff --git a/timeutils.nimble b/timeutils.nimble
index 105ccba..de917e3 100644
--- a/timeutils.nimble
+++ b/timeutils.nimble
@@ -1,10 +1,10 @@
 # Package
 
-version       = "0.5.2"
+version       = "0.5.3"
 author        = "Jonathan Bernard"
 description   = "Utility methods to fill in the lacking time support in Nim\'s stdlib."
 license       = "BSD3"
 
 # Dependencies
 
-requires "nim >= 1.0.0"
+requires "nim >= 1.3.1"