Godric [EMAIL PROTECTED] writes:
Hi. Anyone know if there is a deb package (I'm using Slink still with
2.0.36 kernel) for converting ordinary dates into Julian dates (as used
in Astronomy)? Or if no debs then any GNU/Linux package which I could
use alien on?
The date command (in the shellutils package, you probably have it
already installed) can display the day of the year:
[EMAIL PROTECTED]:~$ date
Sun Dec 5 22:42:21 EET 1999
[EMAIL PROTECTED]:~$ date +%j-%Y
339-1999
[EMAIL PROTECTED]:~$ date +%j-%Y -d'March 12, 1996'
072-1996
[EMAIL PROTECTED]:~$ date +%j-%Y -d'March 12, 1997'
071-1997
Also, cal (in the bsdmainutils package, probably also installed on
your system...) can display Julian dates in its calendar:
[EMAIL PROTECTED]:~$ cal -j
December 1999
S M Tu W Th F S
335 336 337 338
339 340 341 342 343 344 345
346 347 348 349 350 351 352
353 354 355 356 357 358 359
360 361 362 363 364 365
date can also do conversion in the other direction:
[EMAIL PROTECTED]:~$ date -d'January 1, 1997 + 71 days'
Thu Mar 13 00:00:00 EET 1997
[EMAIL PROTECTED]:~$ date -d'January 1, 1996 + 71 days'
Tue Mar 12 00:00:00 EET 1996
--
-=- Rjs -=- [EMAIL PROTECTED]
