How to change the time of day at Somniel in Fire Emblem Engage? - Ultimate Guide

The quickest and easiest way to change the time of day at Somniel is to rest in your room. Once you have completed the tutorial, you will be able to access your room and select the ‘Rest’ option. After selecting this option, you will be taken to the next day, and the time of day will be different from when you initially arrived at Somniel.

Once you have changed the time of day at Somniel, you will be able to access the Tower of Trials, the Bulletin Board, the mini-games, the Cafe Terrace, the Pet Sommie, and the Fishing minigame. All of these are unlocked after completing Chapter 1. 

If you are looking for more information on Fire Emblem Engage, there are plenty of Fire Emblem Engage guides available online. There are also plenty of resources dedicated to the various titles in the Fire Emblem series. You can find these guides on various websites such as Reddit and GameFAQs.