Seems like no one have noticed this simple fact after 18 years of this game's release...
Here's one example, from Zero's speedrun which was done on 18 October (and vid was uploaded 19 October)
https://www.youtube.com/watch?v=1BtN6Wu8b8w&t=548s
![Image](https://cdn.discordapp.com/attachments/518371044503846948/1194626103113961488/image.png)
Another example, my NG+ speedrun which was done on 26 September
https://www.youtube.com/watch?v=mndtBcmIWjA&t=252s
![Image](https://media.discordapp.net/attachments/518371044503846948/1194625933081071626/image.png)
Note that the first day is always fire element, regardless of the date number. So, the date doesn't affect the gameplay at all.