It's pretty annoying that missions vary in duration but don't have a timeout listed. So here's a list of early game missions and how long they last on the geoscape before going poof, (some are missing, some I wasn;t sure what they corressponded with):
Fast (<1 day):
-space freighter: 4-6 hours
-aircar race: 2-4 hours
-hot pursuits: 3-6
-humanist safehouse: 20-40
-Traitors at large: 10-20
-Escape Tower: 4-8
-Crackhouse: 10-100 (lol)
-Bandits!: 12-50
-Shipwreck (castaway): 15-40
-Distress Signal (castaway): 10-50
-Dog's hideout: 20-40 (zaxx C)
-Pest Exterminator: 8-16 (zaxx C)
-Defend the lokknars: 5-10
-Pogrom: 4-10
-Eridian Terror: 6-12
-Blood rituals???: 15-40
-Gal party: 12-36
-orbital space station: 10-20
-Downed govt agents: 20-50
Medium (<4 days):
-archeaological dig: 50-100 hours
-sins of the father 50-100 hours
-mage villa: 50-100 hours
-smugglers lair: 50-100
-ghoul town: 25-50
-lokknar farm:50-100
-Highway house???: 25-50
-Sunday town: 75-100
-Humanist Arsenal: 25-50
-Humanist Villa: 35-70
-Bounty C bandit caves: 50-100
-Doomed Farm: 75-150
-Monster Hunts: 50-100
-Death and taxes: 50-100
-Devil's reef: 75-150
-Cruisin counselors?: 25-50
-Campus Carnage: 50-100
-Bootcamp?: 50-100
Long: (4+ days)
-underwater bounty C: 100-200 hours
-winter palace: 100-200
-disrupted comms: 240-300
-red lantern: 100-200
-bandit town: 100-200
-Haunted Forest: 100-200
-Ht house???: 100-200
-Tolppling towers; 100-200
-Isolated Valley: 100-200
-Prepper camp: 100-200
-Temple Raid: 100-200
-Warehouse wars: 100-200
-Scientific Experiments: 100-200
-Ratmen Rodeo: 100-200
-Taberna del diablo: 100-200
-Mansion Invasion: 100-200
-Siberia: 200-400
-Most sea missions: 100-200
