"The sun greets you early in the morning and sends you to bed at night."

[moonrgr]

While I was on my adventure I had a pop-up message saying "The sun greets you early in the morning and sends you to bed at night.". There was nothing I can do other than clicking "continue". And nothing happened afterwards.
Initially I thought it might be a random event. I previously had random event triggering at fix time; save/reload would trigger different events like men joining me or one of my men challenging me to a due. But this time, reloading it three times brought me the same message at the same time.
Is this just an Easter Egg or is it lore related? If it is lore related, please add a spoiler tag before posting. Thank you.

Serenus

 

[kalarhan]

you get this messages to mark the season change (spring, summer, ...)

this one in particular is for summer