To convert a time in hms format to decimal format, To add times in hms format, To subtract times in hms format – HP 49g Graphing Calculator User Manual
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To convert a
time in HMS format to decimal Format
1. Press
(CAT) HMS^.
2. Enter the time in HMS format.
For example: 5.1231 (that is, 5 hours, 12 minutes, and 31 seconds).
3. Press®®).
The answer is 5.20861111 hours.
In
RPN
mode: follow steps 2 and 1.
To add times in HMS format
1. Press
(CAT)
HMS+.
2. Enter one time in HMS format.
For example: 5.1231 (that is, 5 hours, 12 minutes, and 31 seconds).
3. Press
0Q.
4. Enter the other time, also in HMS fonnat.
For example: 4.5320 (that is, 4 hours, 53 minutes, and 20 seconds).
5. Press (EN®).
The answer is 10.0551 (that is, 10 hoiurs, 5 minutes and 51 seconds).
In RPN mode:
follow steps 2, 4, and 1.
To subtract times in HMS Format
1. Press
(CAT)
HMS-.
2. Enter one time in HMS format.
For example: 7.2201 (that is, 7 hours, 22 minutes, and 1 second).
3. Press 0Q.
4. Enter the other time, also in HMS format.
For example: 4.13275 (that is, 4 hours, 13 minutes, and 27.5 seconds).
5.
Press
(ENTER).
The answer is 3.08335 (that is, 3 hours, 8 minutes and 33.5 seconds).
In RPN mode:
follow steps 2, 4, and
1.
Date and time arithmetic
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