Fix for default Epoch to use monotonic clock

snowflake.go

@@ -12,9 +12,11 @@ import (
 )
 
 var (
+	curTime = time.Now()
 	// Epoch is set to the twitter snowflake epoch of Nov 04 2010 01:42:54 UTC
 	// You may customize this to set a different epoch for your application.
-	Epoch = time.Date(2010, time.November, 4, 1, 42, 54, 0, time.UTC)
+	// Note: add time.Duration to time.Now() to make sure we use the monotonic clock if available.
+	Epoch = curTime.Add(time.Date(2010, time.November, 4, 1, 42, 54, 0, time.UTC).Sub(curTime))
 
 	// Number of bits to use for Node
 	// Remember, you have a total 22 bits to share between Node/Step