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  1. ObsPy Documentation (1.2.0)
  2. ObsPy Library Reference
  3. obspy.core - Core classes of ObsPy
  4. obspy.core.utcdatetime
  5. obspy.core.utcdatetime.UTCDateTime

obspy.core.utcdatetime.UTCDateTime.__sub__

UTCDateTime.__sub__(value)[source]

Subtracts seconds and microseconds from current UTCDateTime object.

Parameters:value (int, float or UTCDateTime) Seconds or UTCDateTime object to subtract. Subtracting an UTCDateTime objects results into a relative time span in seconds.
Return type:UTCDateTime or float
Returns:New UTCDateTime object or relative time span in seconds.

Example

>>> dt = UTCDateTime(1970, 1, 2, 0, 0)
>>> dt - 2
UTCDateTime(1970, 1, 1, 23, 59, 58)

>>> UTCDateTime(1970, 1, 2, 0, 0) - 1.123456
UTCDateTime(1970, 1, 1, 23, 59, 58, 876544)

>>> UTCDateTime(1970, 1, 2, 0, 0) - UTCDateTime(1970, 1, 1, 0, 0)
86400.0