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The 'timezone' is taken from the system clock.| 1st day of each month | mean abs. error | stand. dev. | 
| local mean sidereal time | 1.6 s | 0.3 s | 
| declination | 0.0006° | 0.0004° | 
| longitude | 0.002° | 0.001° | 
| Right Ascension | 0.8 s | 0.6 s | 
| Equation of Time | 0.6 s | 0.5 s | 
| Jan 1 of each year | mean abs. error | stand. dev. | 
| local mean sidereal time | 1.5 s | 0.3 s | 
| declination | 0.0003° | 0.0002° | 
| longitude | 0.0025° | 0.0016° | 
| Right Ascension | 0.7 s | 0.6 s | 
| Equation of Time | 0.8 s | 0.6 s |