No, not that Twilight. This is a really cool Google Maps powered tool that allows the budding photographer in us to work out when the ‘Golden hour’ is wherever we are on the planet.
In photography, the golden hour (sometimes known as magic hour, especially in cinematography) is the first and last hour of sunlight during the day,when a specific photographic effect is achieved due to the quality of the light. – Wikipedia
A really useful tool I strongly recommend you check out (the UI could use a little work however).
The link: The Twilight Calculator