Sir, not much of departure/arrival history is available for this train, being as it is a VERY LIMITED PERIOD SPECIAL TRAIN. However, this train seems to be a dry run for the proposed 5612 Kamakhya LTT Karmabhhomi Express.
Although, I cannot really substantiate my optimism, I think this train which is a weekly service with last date of run on 13th Nov, is a fairly good option for your travel from Howrah (dep:14.35) to Nagpur (arr:8.20 am)