Calculated Industries 9426 - Manual (Page 16)

Time and Date Math Rules
There are basically two kinds of time
and date conventions considered:
1. Points in Time (a specific time or date):
9:22 AM, 5 PM
1/15/1997
2. Time Periods (a span of time):
37 Minutes, 45 Seconds
2 Weeks, 3 Days
Tme and date formats are Hours,
Minutes, Seconds, Years, Months,
Weeks, and Days. When entering Time
and Date values, the entry must comply
with the following rules:
Addition
Period + Period = Period
Point + Period = Point
Point + Point = Error
Subtraction
Period – Period = Period
Point – Period = Point
Point – Point = Period
Period – Point = Error
Note: When subtracting one point in time
from another, enter the later time first, then
the earlier time.
16—ScheduleCalc™