TimeUnix¶
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class
astropy.time.
TimeUnix
(val1, val2, scale, precision, in_subfmt, out_subfmt, from_jd=False)[source] [edit on github]¶ 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
cache
Return the cache associated with this instance. epoch_format
epoch_scale
epoch_val
epoch_val2
jd2_filled
mask
masked
name
scale
Time scale unit
value
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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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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unit
= 1.1574074074074073e-05¶
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value
¶
Methods Documentation
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mask_if_needed
(value) [edit on github]¶
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set_jds
(val1, val2) [edit on github]¶ 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) [edit on github]¶ Return time representation from internal jd1 and jd2. This is the base method that ignores
parent
and requires that subclasses implement thevalue
property. Subclasses that requireparent
or have other optional args forto_value
should compute and return the value directly.
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