1) When is Jeff having a party on Saturday .He is having a party at 5 p.m.
2) When is he meeting his friends at the rialway station?He is meeting his friends at 11p.m.
3) When is he leaving for St Petersburg ? He is leaving for St Petersburg at 11.30 p.m.
4) When is he arriving in St Petersburg ?He is arriving in St Petersburg on Sunday .