Everyday

 is Disc 1, Track 17 on the Xenosaga Original Soundtrack and Disc 2, Track 15 on the album. ('Everyday' is an unofficial translation, as seen in the VGMdb listing of the album.)

It plays in the following cutscenes:
 * Allen sets out to take KOS-MOS's battle data to Shion on the Woglinde.
 * Shion talks with Jin in her room on the Woglinde.
 * The crew of the Elsa enjoys Shion's cooking.
 * Miyuki and Shion talk after the director of Vector's First R&D Division agrees to let the party keep KOS-MOS for some more time.
 * The party enjoys a meal after saving Ziggy and MOMO.
 * Allen excitedly tells Shion that the Durandal will take them to Second Miltia.
 * The party visits the beach at the Kukai Foundation.