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| -rw-r--r-- | doc/source/reference/arrays.datetime.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/source/reference/arrays.datetime.rst b/doc/source/reference/arrays.datetime.rst index 387515f59..836373c74 100644 --- a/doc/source/reference/arrays.datetime.rst +++ b/doc/source/reference/arrays.datetime.rst @@ -100,7 +100,9 @@ Datetime and Timedelta Arithmetic NumPy allows the subtraction of two Datetime values, an operation which produces a number with a time unit. Because NumPy doesn't have a physical quantities system in its core, the timedelta64 data type was created -to complement datetime64. +to complement datetime64. The arguments for timedelta64 are a number, +to represent the number of units, and a date/time unit, such as +(D)ay, (M)onth, (Y)ear, (h)ours, (m)inutes, or (s)econds. Datetimes and Timedeltas work together to provide ways for simple datetime calculations. |