These are blocks that will parse the JSON response content properly for the current day:
P.S. These blocks can be dragged directly into your Blocks Editor workspace.
See A way to group projects by theme - #10 by ABG
for a demo.
Regarding your image selection, avoid spaces in file names until nb188.
Notice how I transform description text into a possible file name.
It is up to you to get appropriately named files into the Media folder.
Regarding the condition slug "cloudly_day", that sounds like a great name for a web site.
P.S. I can't comment on errors I haven't seen in blocks I haven't seen in a project I haven't seen.