I've used BigTimer for many years and it it very good, except I find that the sunrise / sunset times are a bit off (yes I have inputted location coordinates). I find I'm always having to adjust offsets.
Are there any other good alternatives anyone can recommend?
Don't be put off by the options it offers, it can also just be a simple timer.
And the best bit is that the author is a member of the node-red team, so you will always get support here. Have fun!