Calculations With Dates - HP 50g User Manual

Graphing calculator.

The application of these functions is demonstrated below.
DATE:
Places current date in the stack
DATE:
Set system date to specified value
TIME:
Places current time in 24-hr HH.MMSS format
TIME:
Set system time to specified value in 24-hr HH.MM.SS format
TICKS:
Provides system time as binary integer in units of clock ticks with 1
tick = 1/8192 sec
ALRM..:
Sub-menu with alarm manipulation functions (described later)
DATE+:
Adds or subtract a number of days to a date
DDAYS(x,y): Returns number of days between dates x and y
HMS:
Converts time from decimal to HH.MMSS
HMS :
Converts time from HH.MMSS to decimal
HMS+:
Add two times in HH.MMSS format
HMS-:
Subtract two times in HH.MMSS format
TSTR(time, date): Converts time, date to string format
CLKADJ(x): Adds x ticks to system time (1 tick = 1/8192 sec )
Functions
DATE,
no examples provided here for these functions.
Here are examples of functions DATE, TIME, and TSTR:

Calculations with dates

For calculations with dates, use functions DATE+, DDAYS. Here is an example
of application of these functions, together with an example of function TICKS:
TIME, CLKADJ are used to adjust date and time. There are
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