If you live to the eve of your 90th birthday, you get 32,872 opportunities to watch the sun set. Each time you miss the chance to enjoy the splender of the setting sun, it's an opportunity you'll never get back. Each sunset is somewhat unique and varies to a degree from one evening to the next.
It's been my experience that a sunset is best experienced in person.
Should I run across other pertinent sunset information, I'll post it here on Old and Ridiculous.