diff --git a/code/lib/lmdk_bgt.py b/code/lib/lmdk_bgt.py
index 9aa5dff..8f372db 100644
--- a/code/lib/lmdk_bgt.py
+++ b/code/lib/lmdk_bgt.py
@@ -447,7 +447,7 @@ def discount(seq, lmdks, epsilon):
   for i, p in enumerate(seq):
     # Adjust the sampling rate
     if len(lmdks) > 1:
-      samp_rt = datetime.fromtimestamp(int(lmdks[lmdk_cur][3]))/datetime.fromtimestamp(int(lmdks[len(lmdks) - 1][3]))
+      samp_rt = lmdks[lmdk_cur][3] / lmdks[len(lmdks) - 1][3]
     # Check if current point is a landmark
     if lmdk_lib.is_landmark(p, lmdks):
       lmdk_cur += 1