Answer: Lets start off with what a day book use to be.
2: A diary or journal.
Now with computers and mobil everything most people don't write these things down in books anymore so the day book needed a new purpose. Some people make them for creative journaling, inspiration books, pretty note books even smash books can be called a day book but for me it is a mini travel/memory book to go. I make mine with photo mats, journaling spots and pockets (cant have enough pockets) in a size that fits in your weekend bag. As you go away for a weekend trip to say....wine tasting in Sonoma, you can bring your day book and keep all the special keepsakes for the weekend in the pockets, write your favorite weekend memories down then, when you get home and print your pictures you just place them on the photo mats in your book. Now you have a beautiful keepsake full of memories to show your friends and family and you did it on the go.