The slack of 1 hr is given in MGS-Gaya because of the 4 Rajdhani's Gang - Ranchi Rajdhani/GR, Howrah, Sealdah & Bhubaneswar Rajdhani.
MGS arrival 00:20 - departure 00:30 (as per #newTT of 12398).
1st Ranchi Rajdhani/GR leaves MGS at 1:28. Last BBS Rajdhani leaves MGS at 2:05 and reaches Gaya at 4:18.
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A...
more... good though of Railway in order to improve Punctuality of 12398/NDLS-Gaya. With this new TT 12397/Gaya-NDLS will not be re-scheduling from Gaya and will reach NDLS by 5 - 7:30 - 8:30 max. So no more scheduling from 01-October-2015.
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And yes it will be re-scheduling from New Delhi in Winter season (December-January) due to Fog. It was re-scheduling with old TT (2:05) as well in winter. Even Rajdhanis get re-scheduled in winter.
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Still no one can trust on Punctuality of any train which passes Allahabad as:
"Allahabad topped the list with just 25 per cent train punctuality, which means 75 per cent of the trains passing through this division are always late".
The railway board had conducted a punctuality survey of all the railway divisions in the country. SOI: The Times of India| Click on the URL link
click here