Originally Posted by TRabic
Perhaps not exactly what you're looking for, but here is your answer from my industrial counterpart:
Intermatic has two series of industrial astronomic timers. These are the ET8000 series which is a 7 day electronic timer and the ET70000 series which is a 365 day electronic timer. A typical application for these industrial timers are controlling parking lots lights, billboard lighting, and retail store lighting.
If you want more information, I suggest visiting www.Intermatic.com.
For years I used the ET7000 series Digital Astronomic Timer/Switch as my go-to control device. It is a very robust, but overly expensive unit. It served me well until I found other more cost effective astronomical timers.
I still have dozens of these installed and working flawlessly. The ability to enter 'holiday' programs and change programs based on the day of the week, time of year, etc is really their true strength. Just be prepared for a $300+ cost.