diff --git a/DataRequest.py b/DataRequest.py
index d3e8c20..9a79004 100644
--- a/DataRequest.py
+++ b/DataRequest.py
@@ -211,12 +211,12 @@ if download == True:
     if start.day + ascent_window > (date(year2, next_month, 1) - date(start.year, start.month, 1)).days:
         short_ascent = 0
         startdays = [str(start.day + i).zfill(2) for i in range(
-            (date(start.year, start.month + 1, 1) - date(start.year, start.month, 1)).days - start.day + 1)]
+            (date(year2, next_month, 1) - date(start.year, start.month, 1)).days - start.day + 1)]
         endascent = [str(i + 1).zfill(2) for i in range(ascent_window - len(startdays) + 1)]
     else:
         short_ascent = 1
         startdays = [str(startday + i).zfill(2) for i in range(
-            (date(start.year, startmonth + 1, 1) - date(startyear, startmonth, 1)).days - startday + 1)]
+            (date(year2, next_month, 1) - date(start.year, start.month, 1)).days - startday + 1)]
         ascentdays = [str(start.day + i).zfill(2) for i in range(ascent_window)]
 
     if end.year == start.year:
@@ -261,9 +261,9 @@ if download == True:
 
             if same_year == 1:
                 for m in range(end.month - start.month - 1):
-                    ERAsingle(start.year, start.month + 1 + m, days, north_lim, south_lim, east_lim, west_lim,
+                    ERAsingle(start.year, next_month + m, days, north_lim, south_lim, east_lim, west_lim,
                               os.path.join(folder, "single" + str(m + 2) + ".nc"))
-                    ERAlevelFloat(start.year, start.month + 1 + m, days, north_lim, south_lim, east_lim, west_lim,
+                    ERAlevelFloat(start.year, next_month + m, days, north_lim, south_lim, east_lim, west_lim,
                                   os.path.join(folder, "float" + str(m + 2) + ".nc"))
 
                 ERAsingle(start.year, end.month, endfloat, north_lim, south_lim, east_lim, west_lim,
@@ -273,18 +273,18 @@ if download == True:
             else:
                 count1 = 0
                 count2 = 0
-                for m in range(13 - start.month):
+                for m in range(12 - start.month):
                     ERAsingle(start.year, start.month + 1 + m, days, north_lim, south_lim, east_lim, west_lim,
                               os.path.join(folder, "single" + str(m + 2) + ".nc"))
-                    ERAlevelFloat(start.year, start.month + 1 + m, days, north_lim, south_lim, east_lim, west_lim,
+                    ERAlevelFloat(, start.month + 1 + m, days, north_lim, south_lim, east_lim, west_lim,
                                   os.path.join(folder, "float" + str(m + 2) + ".nc"))
                     count1 = m + 2
                 for m in range(end.month - 1):
                     ERAsingle(end.year, 1 + m, days, north_lim, south_lim, east_lim, west_lim,
-                              os.path.join(folder, "single" + str(count1 + m + 1) + ".nc"))
+                              os.path.join(folder, "single" + str(count1 + m + 2) + ".nc"))
                     ERAlevelFloat(end.year, 1 + m, days, north_lim, south_lim, east_lim, west_lim,
-                                  os.path.join(folder, "float" + str(count1 + m + 1) + ".nc"))
-                    count2 = count1 + m + 1
+                                  os.path.join(folder, "float" + str(count1 + m + 2) + ".nc"))
+                    count2 = count1 + m + 2
 
                 ERAsingle(end.year, end.month, endfloat, north_lim, south_lim, east_lim, west_lim,
                           os.path.join(folder, "single" + str(count2 + 1) + ".nc"))