Flight
Figure out your flight options to Delhi. From Delhi you can take the AirIndia flight that departs at 9:55 am daily and arrives at Pantnagar at 10:55 am (if train is not your preferred option). The wedding venue is 60 kms from the Pantnagar airport and should take about 1 hour 50 minutes to reach there.
Train
There are three trains from Delhi to Kathgodam: 1. Shatabdi - departs NDLS station in Delhi at 6:20 am and arrives at Kathgodam station at 11:40 am the same day. 2. Uttarakhand Sampark Kranti - departs Old Delhi railway station at 4:00 pm and arrives at Kathgodam station at 10:45 pm the same day. 3. Ranikhet Express - departs Delhi Cantt station at 8:00 pm and arrives at Kathgodam station at 5:05 am the next day. The best option will be to fly to Delhi on Nov 22nd and take the overnight Ranikhet Express train to arrive at Kathgodam on 23rd morning or fly to Delhi on Nov 22nd and take the Shatabdi train on Nov 23rd morning at 6 am to arrive at Kathgodam on 23rd around noon.