From Fallen London Wiki
Estival doesn't count, this and the <a href="/wiki/Sample_of_Lacreous_Affection" title="Sample of Lacreous Affection"><img alt="" src="/w/images/thumb/e/e1/Correspondence2.png/20px-Correspondence2.png" decoding="async" width="20" height="26" srcset="/w/images/thumb/e/e1/Correspondence2.png/30px-Correspondence2.png 1.5x, /w/images/thumb/e/e1/Correspondence2.png/40px-Correspondence2.png 2x" /></a> <a href="/wiki/Sample_of_Lacreous_Affection" title="Sample of Lacreous Affection">Sample of Lacreous Affection</a> have always been estival end rewards. The FotZ seems to be so that it gets a grindable source like christmas for the SLA