Oops - I made a typo. Replace TT with UT1. (TT is trivial to calculate). -J
-- On Sun, Jul 16, 2006 at 10:25:51PM -1000, Joshua Hoblitt wrote: > Is all that stuff just a reinvention of the wheel? What's the value add > over DateTime and the zillions of other date/time modules already on CPAN? > > I have to admit I haven't really looked at your code in depth but I > don't see how you can accurately be calculating TT/etc. without doing an > interpolation of IERS data. > > If your interested in looking a working implementation of this I have one > in C as part of this library: > > http://pan-starrs.ifa.hawaii.edu/project/IPP/software/pslib/ > > The relevant functions are documented here: > > > http://pan-starrs.ifa.hawaii.edu/project/IPP/software/pslib/pslib-0.12.0/doxygen/group__Time.html > > (caution: not well tested) > > -J > > -- > On Thu, Jun 15, 2006 at 09:42:45AM +0100, Zefram wrote: > > I've written a couple of Perl modules that do low-level date stuff, > > way below the high-level DateTime concept. I'd appreciate a review > > of my modules by the date experts on this list. The modules are > > Date::JD, which does conversions between several flavours of Julian > > Date, and Date::ISO8601, which implements the ISO 8601 calendrs in > > terms of Chronological Julian Day Numbers. They can be found at > > <http://search.cpan.org/~zefram/>. Thanks. > > > > -zefram
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