Actually, I'll be flying in to Delhi on October 18th too

And Delhi, Agra, Jaipur are definitely on the itinerary.
However, I have a bit of a problem and I'm hoping the experts on this thread can help. When they give you 30-days for the Visa on Arrival, do they mean 30 days exactly?
My flight to Delhi arrives on October 19th. I'll be flying out from Chennai on November 18th. Due to oversight on my part, I forgot to consider that since October has 31 days, if I count the actual number of days I'll be in India, I'll end up overstaying by 1 day
So my questions are:
[1] When they give you the 30 day Visa on Arrival, do they include "Valid Until / Permitted to remain until" info on the visa? Or do they include this info with the entry stamp? I've noticed that this is the case for some countries, so at least I'll be able to check on entry if I'm running the risk of overstaying
If anyone can post their visa + entry/exit stamp (with personal details blurred out), it'll be much appreciated
[2] Do they give exactly 30 days? Or do they give 1 month?
I noticed in some of my previous visas/entry/exit stamps for other countries, it's usually 1 month. For example, in my SK visa:
Entry: May 8th (the month of May also has 31 days)
Exit: June 7th
Any inputs/help will be appreciated. Thank you in advance!