As reported last week, Transit is running the holiday Nostalgia Train every Sunday this month. Some people riding along the Sixth Ave. line will be pleasantly surprised when the train shows up; others want to know the times. Luckily, Subchat has a timetable. According to one poster there, the trains will leave 2nd Ave. every 90 minutes starting at 10:01 a.m. The last ride to Queens Plaza departs at 4:01 p.m. The trains leave Queens Plaza starting at 10:44 a.m. and continuing every 90 minutes until the last train departs at 4:44 p.m. If you hurry, there’s still time to catch the last few rides today.