diff --git a/datm.streams.xml b/datm.streams.xml
index 677261e..039cfb2 100644
--- a/datm.streams.xml
+++ b/datm.streams.xml
@@ -9,7 +9,7 @@
    <dtlimit>1.5</dtlimit>
    <year_first>1900</year_first>
    <year_last>1900</year_last>
-   <year_align>1</year_align>
+   <year_align>1900</year_align>
    <vectors>null</vectors>
    <meshfile>./input/JRA55do-ESMFmesh.nc</meshfile>
    <lev_dimname>null</lev_dimname>
@@ -30,7 +30,7 @@
    <dtlimit>1.5</dtlimit>
    <year_first>1900</year_first>
    <year_last>1900</year_last>
-   <year_align>1</year_align>
+   <year_align>1900</year_align>
    <vectors>null</vectors>
    <meshfile>./input/JRA55do-ESMFmesh.nc</meshfile>
    <lev_dimname>null</lev_dimname>
@@ -51,7 +51,7 @@
    <dtlimit>1.5</dtlimit>
    <year_first>1900</year_first>
    <year_last>1900</year_last>
-   <year_align>1</year_align>
+   <year_align>1900</year_align>
    <vectors>null</vectors>
    <meshfile>./input/JRA55do-ESMFmesh.nc</meshfile>
    <lev_dimname>null</lev_dimname>
@@ -73,7 +73,7 @@
    <dtlimit>1.5</dtlimit>
    <year_first>1900</year_first>
    <year_last>1900</year_last>
-   <year_align>1</year_align>
+   <year_align>1900</year_align>
    <vectors>null</vectors>
    <meshfile>./input/JRA55do-ESMFmesh.nc</meshfile>
    <lev_dimname>null</lev_dimname>
@@ -95,7 +95,7 @@
    <dtlimit>1.5</dtlimit>
    <year_first>1900</year_first>
    <year_last>1900</year_last>
-   <year_align>1</year_align>
+   <year_align>1900</year_align>
    <vectors>null</vectors>
    <meshfile>./input/JRA55do-ESMFmesh.nc</meshfile>
    <lev_dimname>null</lev_dimname>
@@ -117,7 +117,7 @@
    <dtlimit>1.5</dtlimit>
    <year_first>1900</year_first>
    <year_last>1900</year_last>
-   <year_align>1</year_align>
+   <year_align>1900</year_align>
    <vectors>null</vectors>
    <meshfile>./input/JRA55do-ESMFmesh.nc</meshfile>
    <lev_dimname>null</lev_dimname>
@@ -139,7 +139,7 @@
    <dtlimit>1.5</dtlimit>
    <year_first>1900</year_first>
    <year_last>1900</year_last>
-   <year_align>1</year_align>
+   <year_align>1900</year_align>
    <vectors>null</vectors>
    <meshfile>./input/JRA55do-ESMFmesh.nc</meshfile>
    <lev_dimname>null</lev_dimname>
@@ -161,7 +161,7 @@
    <dtlimit>1.5</dtlimit>
    <year_first>1900</year_first>
    <year_last>1900</year_last>
-   <year_align>1</year_align>
+   <year_align>1900</year_align>
    <vectors>null</vectors>
    <meshfile>./input/JRA55do-ESMFmesh.nc</meshfile>
    <lev_dimname>null</lev_dimname>
@@ -183,7 +183,7 @@
    <dtlimit>1.5</dtlimit>
    <year_first>1900</year_first>
    <year_last>1900</year_last>
-   <year_align>1</year_align>
+   <year_align>1900</year_align>
    <vectors>null</vectors>
    <meshfile>./input/JRA55do-ESMFmesh.nc</meshfile>
    <lev_dimname>null</lev_dimname>
diff --git a/drof.streams.xml b/drof.streams.xml
index a0ea120..90c7d9f 100644
--- a/drof.streams.xml
+++ b/drof.streams.xml
@@ -9,7 +9,7 @@
    <dtlimit>3.0</dtlimit>
    <year_first>1900</year_first>
    <year_last>1900</year_last>
-   <year_align>1</year_align>
+   <year_align>1900</year_align>
    <vectors>null</vectors>
    <meshfile>./input/JRA55do-ESMFmesh.nc</meshfile>
    <lev_dimname>null</lev_dimname>
@@ -30,7 +30,7 @@
    <dtlimit>3.0</dtlimit>
    <year_first>1900</year_first>
    <year_last>1900</year_last>
-   <year_align>1</year_align>
+   <year_align>1900</year_align>
    <vectors>null</vectors>
    <meshfile>./input/JRA55do-ESMFmesh.nc</meshfile>
    <lev_dimname>null</lev_dimname>
diff --git a/nuopc.runconfig b/nuopc.runconfig
index 39c3d39..4c273a8 100644
--- a/nuopc.runconfig
+++ b/nuopc.runconfig
@@ -292,7 +292,7 @@ CLOCK_attributes::
      restart_ymd = -999
      rof_cpl_dt = 3600
      start_tod = 0
-     start_ymd = 00010101
+     start_ymd = 19000101
      stop_n = 1
      stop_option = nmonths
      stop_tod = 0