| 31. | Of course, the equation of time can still be used, when required, to obtain apparent solar time from clock time.
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| 32. | This is the equation of the pendulum, also called the equation of time, the table is added shortly before 1750.
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| 33. | As the plaque indicates with an additional correction, the equation of time table does not correct for daylight saving time.
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| 34. | In about 1763 he devised a precision sundial, or " heliochronometer " that incorporated the correction for the equation of time.
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| 35. | Many of them also display mean time and the equation of time, but the user does not have to perform addition.
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| 36. | This event may occur up to 16 minutes before or after noon GMT, a discrepancy calculated by the equation of time.
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| 37. | There are relatively minor inaccuracies due to the difference between local time and zone time, and due to the equation of time.
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| 38. | The tracker contains a mechanism that takes account of the equation of time and makes the tracker move according to sundial time.
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| 39. | On other nearby dates the only thing different is the equation of time, so this remains a reasonable estimate for a considerable period.
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| 40. | Many sundials, therefore, have tables or graphs of the equation of time engraved on them to allow the user to make this correction.
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