This news comes from CNN on a Saturday, named after Saturn, thus why grandma’s age is important.
Saturn = 93

https://www.cnn.com/travel/article/grandmother-grandson-visit-national-parks-trnd/index.html

Notice that the final journey began on a Saturday as well.

https://www.goodmorningamerica.com/travel/story/93-year-grandmother-grandson-finish-quest-visit-63-99392518