A year contains (more-or-less, but more accurately than what you've specified) 365.25 days (a leap-year happens each four years, but not ALWAYS every four years).
300 * 365.25 = 109,575 109,575 * (24 * 60 * 60 * 10,000,000) = 94,672,800,000,000,000 C:\> W32tm /ntte 94672800000000000 109575 00:00:00.0000000 - 1/3/1901 7:00:00 PM Using PowerShell to perform these types of date calculations is a LOT easier than attempting to do it manually, as well as less prone to error (it knows all of the proper adjustments to make). Regards, Michael B. Smith Consultant and Exchange MVP http://TheEssentialExchange.com From: Bonner, John [mailto:johnbon...@centura.org] Sent: Thursday, December 22, 2011 6:13 PM To: NT System Admin Issues Subject: w32tm.exe Help Understanding--Update OK I figured out the first one. It is not the number of naonoseconds. It is 100 nanosecond intervals. So that makes sense as for the 100 days when it should be one day. Still working on the second one. Hello and Merry Christmas, I am feeling pretty dumb here and would like to wrap up one of my projects before the holiday. Currently I am trying to do some calculations using w32tm.exe to validate my math...and my math appears to be wrong. For example I Google how many nanoseconds in a day. From multiple sources I get 86,400,000,000,000. Fine then w32tm.exe should match saying 1 day....but it doesn't It says 100 days???? C:\Users\jbonner>w32tm.exe /ntte 86400000000000 100 00:00:00.0000000 - 4/10/1601 5:00:00 PM A day is a day regardless so I can't see that time zone would matter for this simple calculation?? So let's say Google is wrong and I use 864,000,000,000 which does show as one day. C:\Users\jbonner>w32tm.exe /ntte 864000000000 1 00:00:00.0000000 - 4/10/1601 5:00:00 PM Fine w32tm.exe has an epoch of 1-1-1601. I want the number of nanoseconds till 1-1-1901. That would be 300 (1901-1601) 365 (days in a year) 300 * 365 = 109,500 days 109500 days * 864000000000 (nanoseconds in a day) = 94,608,000,000,000,000 Close but no dice. C:\Users\jbonner>w32tm.exe /ntte 94608000000000000 109500 00:00:00.0000000 - 10/20/1900 5:00:00 PM So I am pretty confused and any clarification would be greatly appreciated. JB ***************************************************************************** This communication is for the use of the intended recipient only. It may contain information that is privileged and confidential. If you are not the intended recipient of this communication, any disclosure, copying, further distribution or use thereof is prohibited. If you have received this communication in error, please advise me by return e-mail or by telephone and delete/destroy it. ***************************************************************************** ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
