Read this post only if you are interested in photography.
Making a technically good photograph during the sunset or sunrise is difficult due to one factor - the sky is usually much brighter than the land. Which makes either the land very dark and without detail, or the sky badly overexposed.
One possible solution is making two photographs. The composition should be identical, exposure in first case adjusted to sky, in second case - the land. Merging the correctly exposed parts of photographs afterwards.
This technique won't work if the subject is moving though.
Another option is using a gradual ND filter, which is much easier.
I've been looking for such thing during the whole trip. No retailer had it in any of 10 countries that we've travelled to, except of a shop in Kathmandu, where the price was quite steep.
Some of the first test results are quite satisfactory. First photo taken without the filter, the second - with. No flash used in any case.