Chart correction N31/20 — chart 24492
24492 21Ed. 9/27/08 LAST NM N20/20 N31/20 Change Period of light to 15s 11°15′00.0″N 74°13′50.0″W (86/20 Bogota)
Source: NGA U.S. Notice to Mariners · edition: 21Ed. 9/27/08
Reference information — always verify against official Notices to Mariners before navigation.