Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 (USS@Tek, v1.0) based on 4.3bsd-beta 6/6/85; site tektronix.UUCP Path: utzoo!watmath!clyde!cbosgd!hplabs!tektronix!brucec From: brucec@tektronix.UUCP (Bruce Cheney) Newsgroups: net.astro Subject: Spring Equilux Approaches ! Repent now ! Message-ID: <6895@tektronix.UUCP> Date: Fri, 14-Mar-86 13:25:22 EST Article-I.D.: tektroni.6895 Posted: Fri Mar 14 13:25:22 1986 Date-Received: Sun, 16-Mar-86 08:34:54 EST Distribution: net Organization: Tektronix, Inc., Beaverton, OR Lines: 35 Keywords: equilux, equinox, This is just a friendly reminder that the spring equilux, the day when there are equal amounts of light and darkness, is approaching. For those of you who participated in a discussion last year exploring the reasons why equilux and equinox are not coincident, here is a further question to ponder: According to the data shown below, (Portland, OR 45 deg N, 122 deg W) sunrise and sunset for the spring equilux, Mar 17, is at 6:20 (am and pm), for the fall equilux they are at 6:02 (am and pm PST). Why are they different ? How come they both aren't at 6:00 (am and pm PST) ? Fall equilux is close enough, but those 20 minutes in spring bother me. Sunrise and Sunset at Portland OR Pacific Standard Time Mar. Sept. DAY Rise Set Rise Set AM PM AM PM 16 6:22 6:18 5:50 6:20 * 17 6:20 6:19 5:51 6:18 18 6:18 6:20 5:52 6:16 19 6:16 6:22 5:54 6:14 20 6:14 6:23 5:55 6:13 21 6:12 6:24 5:56 6:11 22 6:10 6:26 5:57 6:09 23 6:09 6:27 5:59 6:07 24 6:07 6:28 6:00 6:05 25 6:05 6:29 6:01 6:03 * 26 6:03 6:31 6:02 6:01 27 6:01 6:32 6:03 5:59 tekcrd!brucec ("The wheel in the sky keeps on turning...")