Give an example of time in the README

[wernight]

There is a list of possible properties but nothing gives the order.

I assembled an example for some of them, I think it'd be useful to complete it and add a column in the README (and order them by time):

1. 05:16 Astronomical twilight starts

2. 05:55 Nautical twilight starts

3. 06:30 Civil twilight starts

4. 07:00 Sunrise

5. 07:03 Sunrise end

6. 07:40 End of morning golden hour

7. 17:35 Start of evening golden hour

8. 18:15 Sunset starts

9. 18:18 Sunset, civil twilight starts

10. 18:50 Dusk, astronomical twilight starts

11. 19:30 Nautical twilight starts

12. 20:00 Dark enough for astronomy