Re: 365 day season timers
This has already been done before with a Raspberry Pi. Essentially it pulled data from an online source and imitated the parameters in the animal's native country for that particular day. If that appeals to you go for it. But there are already astronomical timers easily available at Lowes or Home Depot that adjusts daily to changes in sunset time, adjustable 10 - 60 northern or southern latitudes, and can be individually offset +/- 1-240 minutes from both sunset and sunrise times. The closer you get to the equator the less seasonal changes their are in photo period. At the equator, its pretty much 12 hours of light and 12 hours of darkness.
Seasonal changes in photo period in addition to temperature have been used to improve reproductive success in breeding various caudates such as axolotls and tiger salamanders.
Variations in seasonal photo period have been shown to govern the concentrations of neurosteroids in the brain of amphibians. One study I found states that "Photoperiod may be a more important environmental factor than temperature for the regulation of neurosteroid levels in the brain."
Inai, Y., Nagai, K., Ukena, K., Oishi, T., & Tsutsui, K. (2003). Seasonal changes in neurosteroid concentrations in the amphibian brain and environmental factors regulating their changes. Brain Research, 959(2), 214-225. doi:10.1016/s0006-8993(02)03745-9
Seasonal changes in photo period may of benefit to dendrobatids that are reported to be seasonal in their breeding behavior, such as Dendrobates leucomelas and certain Dendrobates tinctorius locales such as Matecho.