When generating date strings, use i4.4 format for the year.
tree06713aed487815cdad48797509245d81189ec269
-rw-r--r-- 6328 README
drwxr-xr-x - arch
-rwxr-xr-x 1735 clean
-rwxr-xr-x 4105 compile
-rwxr-xr-x 11514 configure
drwxr-xr-x - geogrid
-rwxr-xr-x 1328 link_grib.csh
drwxr-xr-x - metgrid
-rw-r--r-- 745 namelist.wps
-rw-r--r-- 2153 namelist.wps.all_options
-rwxr-xr-x 1207 namelist.wps.fire
-rw-r--r-- 1079 namelist.wps.global
-rw-r--r-- 656 namelist.wps.nmm
drwxr-xr-x - ungrib
drwxr-xr-x - util