Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: Can this timer be set to control light as a plus or minus from sun rise/set?
Document: We use this for a sun lamp for a bearded dragon that needs 12hrs of light. The battery backup is really nice to keep things going, and keeps the timer in sync with real time
I have exterior lights lining the house and always had to keep changing the time the lights came on based on the time the sun was setting throughout the year but with this timer it changes the times for you based on the longitude and latitude of your house (provides a link for a search tool so that you can find this). I also highly recommend the indoor light switch version to this if you have outdoor lights controlled by an indoor light switch.
I wanted the ability to set a timer so a light would go on at sunset without me having to adjust it throughout the year - this does the job.
I use this to turn the light on for my birds. I like the sunrise / sunset feature so the light can come on 30min after sunrise and off 30min before sunset. I have yet to completely understand how it works but do love the features.I bought another for when I leave town, I can set the random times so it looks as though someone is home.
This is wonderful timer for my plant light. It is extremely accurate and very well designed. I am very pleased with it. There's no need for a light detector to shut it off which in itself brings a lot of problems when detecting light indoors with shadows, nearby lights manually switched on, etc. The accuracy of daylight is determined by your latitude/longitude of your location. Then there's an offset if needed. Again, this is well designed.
It has a battery backup. I find this is useful during programming, as I unplugged the timer from the wall and programmed it under a reading light so I could better see the display.5. The timer has both standard and pro programming modes. You select the desired mode when you first power up the timer. The standard mode user interface is simpler and has 3 on/off programs per day. The pro mode user interface is more powerful and has 50 on/off events per day. Events in both modes can be programmer for days, weekdays, or weekends.6.
Very intuitive, well built timer with just about every function one can desire. Smart digital display reflecting old style mechanical timing ring. Easy to setup, I did not need the manual. Grounded, which is a plus. Does not cover other outlet at all.
I purchased two of these units to control lighting in my home and they've been working great so far no issues whatsoever.
We have tried 4 different times to figure out how to set this timer. Still not set. I think it requires an engineering degree.
This timer was easy to set up, fairly easy to program, and keeps good time. I love this timer and will probably buy another.
Answer: yes