TimeUnix¶
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class
astropy.time.
TimeUnix
(val1, val2, scale, precision, in_subfmt, out_subfmt, from_jd=False)[source]¶ Bases:
astropy.time.TimeFromEpoch
Unix time: seconds from 1970-01-01 00:00:00 UTC. For example, 946684800.0 in Unix time is midnight on January 1, 2000.
NOTE: this quantity is not exactly unix time and differs from the strict POSIX definition by up to 1 second on days with a leap second. POSIX unix time actually jumps backward by 1 second at midnight on leap second days while this class value is monotonically increasing at 86400 seconds per UTC day.
Attributes Summary
Return the cache associated with this instance.
Time scale
Methods Summary
mask_if_needed
(value)set_jds
(val1, val2)Initialize the internal jd1 and jd2 attributes given val1 and val2.
to_value
([parent])Return time representation from internal jd1 and jd2.
Attributes Documentation
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cache
¶ Return the cache associated with this instance.
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epoch_format
= 'iso'¶
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epoch_scale
= 'utc'¶
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epoch_val
= '1970-01-01 00:00:00'¶
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epoch_val2
= None¶
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jd1
¶
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jd2
¶
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jd2_filled
¶
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mask
¶
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masked
¶
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name
= 'unix'¶
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scale
¶ Time scale
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subfmts
= (('float', <class 'numpy.float64'>, None, <ufunc 'add'>), ('long', <class 'numpy.float128'>, <function longdouble_to_twoval>, <function twoval_to_longdouble>), ('decimal', <class 'numpy.object_'>, <numpy.vectorize object>, <numpy.vectorize object>), ('str', <class 'numpy.str_'>, <numpy.vectorize object>, <numpy.vectorize object>), ('bytes', <class 'numpy.bytes_'>, <numpy.vectorize object>, <numpy.vectorize object>))¶
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unit
= 1.1574074074074073e-05¶
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value
¶
Methods Documentation
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mask_if_needed
(value)¶
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set_jds
(val1, val2)¶ Initialize the internal jd1 and jd2 attributes given val1 and val2. For an TimeFromEpoch subclass like TimeUnix these will be floats giving the effective seconds since an epoch time (e.g. 1970-01-01 00:00:00).
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to_value
(parent=None, **kwargs)¶ Return time representation from internal jd1 and jd2. Subclasses that require
parent
or to adjust the jds should override this method.
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