I sent some Bitcoin on the 7th of December, and it is still pending.
It was only a small amount (0.00584902 BTC), but it's still something I'm curious to know.
Thanks!
Tx number or another wallet address please, it's easier to say something about possibilities when we can have a look at the transaction itself. (Fees, etc., the address in your signature has no transaction nor balance).
The expiration of a transaction was 3 days in the old times but now it's about 2 weeks and it's not automatic, it's possible that some nodes won't drop it from their mempool and you can expect confirmation, but the time is depending on the fee. If it was 0 fee, then it won't get confirmed, but if it has a fee higher than 10sat/B there's a chance that it will get into a block (sooner or) later.