umber of seconds to this <strong>CPowerTime</strong> object. You can subtract seconds by using a negative number.</td>
</tr>
<tr class="odd">
<td><a href="#AddYears">AddYears</a></td>
<td>Adds the specified number of years to this <strong>CPowerTime</strong> object. You can subtract years by using a negative number.</td>
</tr>
<tr class="even">
<td><a href="#AstroDay">AstroDay</a></td>
<td>Returns the Astronomical Day for any given date.</td>
</tr>
<tr class="odd">
<td><a href="#AstroDayOfWeek">AstroDayOfWe