Is there an app or way to set a start time and end time and totally simulate an automatic sunset with Hue lighting

I want to set a start time and end time and have my Hue lights slowly and very gradually over that timeframe shift from like yellow--> red or even white/blue at the start of the day--> red at end and have it automatically carry that out.

Is this possible and what is the easiest way to automate and have this play out lile that?

My gear

• iOS/iPhone
• Hue Bridge
• Hue Bulbs
• Hue Motion thingie