# Talk:Time
Contents

1 Moon phase mismatch?
2 Shift compared to actual full moon?
3 Does an undead player do double damage at midnight?
4 Playing Nethack on the night of Friday the 13th during a full moon!
5 Game Time

Moon phase mismatch?
 On 13 November 2014, the moon was at last quarter.
The page claims that Friday, November 13th, 2014 should be new moon in NetHack, and indeed wikipedia:Table of lunar phases confirms that a new moon occurs at 15:15 UTC on November 14th, 2014.  However, the {{moon phase}} template disagrees, and so does my own NetHack moon phase calculator based on the code from phase_of_the_moon in hacklib.c.  Is this a bug in NetHack's moon phase calculation?  --Ilmari Karonen 10:06, 12 November 2010 (UTC)

I figured it out, the page simply had a typo.  The Friday and new moon occur on November 13, 2015, not 2014.  Corrected.  --Ilmari Karonen 15:09, 18 November 2010 (UTC)
Shift compared to actual full moon?
I think the full moon occurs on April 6 2012 for time zones West of Asia, but April 5 is not a full moon while April 8 is.  Doesn't that seem a bit shifted? Derekt75 20:51, 6 April 2012 (UTC)

Does an undead player do double damage at midnight?
And if so, does this damage stack with double damage from artifact weapons?  This seems might like it could be a very effective strategy for getting through the Astral Plane at a low level, especially since you would be immune to Death's attacks as well.  Just start the endgame at the hour of midnight while polymorphed into a vampire lord.  --Bencoffman (talk) 18:11, 7 July 2013 (UTC)

AFAICT, it's only in mhitu.c, line 907, and so only applies to undead monsters attacking the player. —bcode&nbsp;talk&nbsp;|&nbsp;mail 18:19, 7 July 2013 (UTC)
Ah ok, bummer.  --Bencoffman (talk) 23:11, 7 July 2013 (UTC)

Playing Nethack on the night of Friday the 13th during a full moon!
I doubt this kind of "talk" allowed, but I THINK IT'S PRETTY COOL.

SO THERE. ——Elliottschar (talk) 00:46, 14 January 2017 (UTC)

Game Time
Besides real-world time, maybe the article should have a section on the simulated passage of time in the game: object and status timers, turn counters, comparative speeds of player and monsters, ... And also touching on the passage of time on other levels besides the one you're currently on. If I leave a level with a dwarf and a rock mole, and come back 2,000 turns later, what should I expect to find? Can a rock mole be generated and start remodelling in my absence? Will corpses rot away? That kind of thing. Netzhack (talk) 12:41, 2 January 2020 (UTC)