September 9th-10th, YOH 1500 - same time as S1E08 "Look Before You Sleep" -- almost three months after Luna's Return

When Spike is summoned to Canterlot, he expects an assignment from Princess Celestia. Instead, he finds himself meeting with the Moon Princess to learn to synchronize his magic flame with her own field so that he can send and receive scrolls from her as well. This is no problem, but then he finds himself reclining on an old-style North-Realm couch having a long conversation with Princess Luna asking him all about his adventures with Twilight Sparkle and being fed a bowl full of gems. Will Spike get a stomach ache?

Sometimes, it's very tough to be a young magic Dragon.