Poll time: what's your longest-running BGP session? No cheating, no "well technically the TCP stayed up" — actual established, prefix-exchanging bgp.
Mine's a fun little project: 847 days on a pair of NAT VPS boxes from RackNerd, Bird 2.0 talking to my ISP's edge. It actually works. They wanted to charge for BGP until I sent them a config that needed zero hand-holding.
show protocols bgp
BGP: isp_edge (Established)
State: Established
Table: master4
Preference: 100
Input filter: default_in
Output filter: default_out
Routes: 12 imported, 1 exported
Last state change: 847d 04:12:33Post yours. Winner gets... respect, I guess.