diff options
| -rw-r--r-- | numpy/ma/core.py | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/numpy/ma/core.py b/numpy/ma/core.py index 72aa0b2c4..e2e954a97 100644 --- a/numpy/ma/core.py +++ b/numpy/ma/core.py @@ -143,8 +143,8 @@ default_filler = {'b': True, 'u' : 999999, 'V' : '???', 'U' : 'N/A', - 'M8[D]' : np.datetime64('1970-01-01'), - 'M8[us]' : np.datetime64('1970-01-01 00:00:00.000000Z') + 'M8[D]' : np.datetime64('NaT', 'D'), + 'M8[us]' : np.datetime64('NaT', 'us') } max_filler = ntypes._minvals max_filler.update([(k, -np.inf) for k in [np.float32, np.float64]]) |