Section 6: Functions 89
To convert from decimal hours to hours, minutes, seconds, simply key in the value for decimal hours and execute HMS . For example, to change 21.57 hours to hours, minutes, seconds:
Keystrokes Display
21.57
 21.57 _

HMS ( LN )
 21.3412
This is 21 hours, 34 minutes, 12 seconds.
Notice that the display is not automatically switched to show you more than four digits after the decimal point. Unless you change it, the display format remains the same as prior to the problem.
To convert from hours, minutes, seconds to decimal hours, simply key in the value for hours, minutes, seconds in that format and execute the HR function. For example, to convert 167 hours, 22 minutes, and 15.68 seconds to its decimal equivalent:
Keystrokes Display
167.221568
 167.221568 _
This is 167 hours, 22 minutes, 15.68 seconds.
g HR ( ex )
 167.371
This is 167.3710 hours.
Using the HMS and HR functions, you can also convert angles specified in decimal degrees to degrees, minutes, seconds, and vice versa. The format for degrees, minutes, seconds is the same as for hours, minutes, seconds.
Example: Convert 19.34 decimal degrees to degrees, minutes, seconds.
Keystrokes Display
19.34
 19.34 _
The angle.
HMS ( LN )
 19.2024
This means 19 degrees, 20 minutes, 24 seconds.
Example: Convert 9 degrees, 9 minutes, 59.3 seconds to its decimal equivalent.
Keystrokes Display
9.09593
 9.09593 _
The angle.
g HR ( ex )
 9.1665