Gerald was born in 1876. By the time he went to sea in 1896, he had experienced 5 birthdays. There was no leap year in 1900, so he expected to have to wait 8 years for an actual birthday.
But alas, in 1904 he was on a ship and on February 28, 1904, they crossed the dateline.
He was the unluckiest man in history in this respect because not only did he wait 8 years because of 1900, he had to wait 12 years because he skipped February 29 in 1904!
The little square piece of paper was the February 29 on their calendar, which they ripped off. The note simply explained how incredibly unlucky he was for missing his birth-date again.
Note: All fictional, no such person has ever been shown to go through this.
Yes, it had already thawed due to loss of power. That’s part of the solution.
No, I was not intending to cook it.
Neither the house nor the kitchen was below freezing, nor was there anything keeping the freezer cold.
My own state was normal, and nobody else was putting anything in or out of the freezer.
BTW, for reasons related to this puzzle, I’m currently posting mostly via my phone, which isn’t as easy for me. So please either reply to one of my posts, or @ me, with your questions.