![]() The hh:mm addition persisted, and, through the program, the hh:mm format would be converted to decimal hours for payroll purposes. The early computer systems simply mimicked their predecessors. Then, again, a payroll person would convert the hh:mm times to decimal hours. An employee would insert his or her punch card and time would be punched in the hh:mm format. The next time clocks were old-school, wall-mounted punch clocks.To calculate worked time, the person responsible for payroll would figure hours and minutes worked but would then convert to decimal hours to do the multiplication. What would they write down? Times such as 8:00 a.m. A person would simply write down when an employee got to work and when they left. The very first time clocks were people.While we could not find a lot of data on why the hh:mm format has emerged as the preferred timekeeping method, we do have a few ideas. It’s much easier to multiply 8.20 (or 8 hours and 12 minutes) by an hourly rate to calculate payroll. Imagine trying to multiply 8:12 (which is 8 hours and 12 minutes) by an employee hourly rate. Decimal hours are easier to work with.Minute hours have a maximum of 1/60 resolution, while decimal hours have a 1/100 resolution. They are more precise - decimal hours are almost two times more precise than minute hours.Why Use Decimal Hours? We Use Decimal Hours for Two Reasons… 8.45 hours - this one is 8 hours and 27 minutes.8.20 hours - you may want to read this as 8 hours and 20 minutes, but it is actually 8 hours and 12 minutes (notice the decimal point).Here are a few examples that are commonly confused 8.75 hours - 8 hours and 45 minutes or 8:45.8.50 hours - here we have 8 and ½ hours, 8 hours and 30 minutes, or 8:30.8.25 hours - this is 8 and 1/4 hours, 8 hours and 15 minutes, or 8:15 (hh:mm), again, note the colon.8.00 hours - this is exactly 8 hours or 8:00 in the hh:mm format - note the use of a colon, not a decimal point.Here are a few examples of decimal hours and how to interpret them… Pair with a standard or screwless wall plate.The big thing to look for is a decimal point (.) or colon (:)ĭecimal hours can sometimes cause a bit of confusion for people who are used to looking at hours in the hh:mm format. Ideal for closet, pantry, garage, laundry room, and outdoor lighting. Light will flash twice to indicate setting success before time-lapse.Įasy to install and compatible with most lighting types. Choose a time-lapse option based on need.īlue LED light to locate in the dark. Time-lapse options are 30 minutes, 1 hour, 2 hours, 4 hours, 8 hours, and 12 hours. ![]() The time differences range from 30 minutes to 12 hours, which are great for areas such as offices, living rooms, kitchens, or anywhere else you spend long periods of time. The HET06-12 has 6 different options for the time you desire. Pre-set Time Switch for Your Home and Office Works with LED, CFL, and most types of light bulbs. The programmable timer controls ventilation fan lights, great for bathroom lights, outdoor irrigation systems, indoor lights. ![]() The switch is user-friendly for all ages and is easy to install. Your lights will always turn on/off automatically as the time-lapse expires. The timer switch promotes energy conservation by allowing you to select a preset timer option. This smart light switch has 6 pre-selected timer options: 30 minutes, 1 hour, 2 hours, 4 hours, 8 hours, and 12 hours. The HET06-12 timer switch gives you the freedom to leave your room while the lights are still on, knowing they will switch off automatically. In-Wall Countdown Timer Switch, 30 min-12 Hours: HET06-12-W ![]()
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