Hi Odinvas, Rajaji Tiger Reserve welcomes visitors twice a day, within sunrise and sunset. This is the detailed schedule: 15th November - 31st January: 6:30 am - 10:30 am and 2:00 pm - 3:30 pm
1st February - 31st March: 6:30 am - 9:30 am and 2:30 pm - 4:00 pm
1st April - 15th June: 6:00 am - 9:00 am and 3:00 pm - 5:00 pm
16th June - 14 November: Park Closed