INTL 06 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120 126 132 138 144 150 156 162 168 174 180 192 204 216 228 240 252 264 LOOP STOP

Note: When NCEP is updating model run, you may get mixed days. Watch the date stamp.