# SiderealTime

gives the right ascension of the local meridian for the current date and location.

SiderealTime[date]

gives the right ascension of the local meridian for the specified date.

SiderealTime[loc]

gives the right ascension of the local meridian for the specified location.

SiderealTime[loc,date]

gives the right ascension of the local meridian for the specified date and location.

SiderealTime[{{loc1,date1},{loc2,date2},}]

gives the right ascensions of the local meridians for all specified locations on the specified dates.

SiderealTime[loc,date,func]

uses func to determine what to return for extended locations.

# Details

• makes use of \$GeoLocation and \$TimeZone to determine your location and time zone.
• Locations can be specified as Entity objects, assuming they represent objects with geographic coordinates or GeoGraphics primitives, or they can be latitude/longitude pairs, assuming degrees as units.
• Dates can be specified as a DateObject or as a string that resolves to a date.
• loc and date can be either individual items or lists of them.
• If datespec is a list of dates, then the results will contain TimeSeries objects.
• datespec can be specified as {start,end,increment} for compatibility with DateRange specifications.
• SiderealTime[,func] is used to specify the format of output when extended locations are specified.
• Possible settings for func include:
•  Automatic returns intervals for extended locations only Interval returns intervals for all specified locations Mean returns mean value for extended locations Min returns minimum values for extended locations Max returns maximum values for extended locations StandardDeviation returns standard deviation for extended locations

# Examples

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## Basic Examples(5)

Compute the sidereal time for your current location:

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Compute the sidereal time for a specified date:

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Compute the sidereal time for a specified location:

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Compute the sidereal time for a specified latitude/longitude and date:

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Compute the sidereal time for a specified city and date:

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