The following table gives the positions of comet Hale-Bopp during March-May 1997 as seen from Visalia, CA. Morning viewing dates are listed first, followed by evening viewing dates.
The columns are, from left to right: date and time in Universal Time; date and time in local zone time; altitude above the horizon; azimuth (measured eastward from north); moonlight interference indicator ("M" when Moon is above the horizon); and the Moon's phase.
Note: Daylight time (PDT) begins in Visalia, CA on 6 April.
COMET HALE-BOPP -- starting March 9 1997
POSITIONS FOR VISALIA, CA
LON 119.3W LAT +36.3N
Morning Observation Times -- Beginning of Astronomical Twilight
UT date/time PST date/time Alt Az Moon Phase
h m o o
MAR 18 12:38 MAR 18 4:38 14.2 44
MAR 19 12:36 MAR 19 4:36 13.4 43
MAR 20 12:35 MAR 20 4:35 12.5 42
MAR 21 12:33 MAR 21 4:33 11.7 41 M
MAR 22 12:31 MAR 22 4:31 10.8 40 M
MAR 23 12:30 MAR 23 4:30 9.9 39 M
MAR 24 12:28 MAR 24 4:28 9.0 38 M Full
MAR 25 12:27 MAR 25 4:27 8.0 37 M
MAR 26 12:25 MAR 26 4:25 7.1 36 M
MAR 27 12:23 MAR 27 4:23 6.1 35 M
MAR 28 12:22 MAR 28 4:22 5.2 34 M
M = Moon above horizon
Evening Observation Times -- End of Astronomical Twilight
UT date/time PST date/time Alt Az Moon Phase
h m o o
MAR 18 3:33 MAR 17 19:33 9.0 320 M
MAR 19 3:34 MAR 18 19:34 9.9 320 M
MAR 20 3:34 MAR 19 19:34 10.7 319 M
MAR 21 3:35 MAR 20 19:35 11.5 319 M
MAR 22 3:36 MAR 21 19:36 12.4 318 M
MAR 23 3:37 MAR 22 19:37 13.1 318 M
MAR 24 3:38 MAR 23 19:38 13.9 317 M Full
MAR 25 3:39 MAR 24 19:39 14.6 317 M
MAR 26 3:40 MAR 25 19:40 15.3 316
MAR 27 3:41 MAR 26 19:41 16.0 316
MAR 28 3:42 MAR 27 19:42 16.6 315
MAR 29 3:43 MAR 28 19:43 17.2 314
MAR 30 3:44 MAR 29 19:44 17.7 314
MAR 31 3:45 MAR 30 19:45 18.2 313
APR 1 3:46 MAR 31 19:46 18.6 312 LQ
APR 2 3:47 APR 1 19:47 19.0 311
APR 3 3:48 APR 2 19:48 19.4 311
APR 4 3:49 APR 3 19:49 19.7 310
APR 5 3:51 APR 4 19:51 19.9 309
APR 6 3:52 APR 5 19:52 20.1 308
APR 7 3:53 APR 6 20:53 20.3 307 New
APR 8 3:54 APR 7 20:54 20.4 307
APR 9 3:55 APR 8 20:55 20.4 306 M
APR 10 3:56 APR 9 20:56 20.4 305 M
APR 11 3:57 APR 10 20:57 20.4 304 M
APR 12 3:58 APR 11 20:58 20.3 304 M
APR 13 3:59 APR 12 20:59 20.1 303 M
APR 14 4:00 APR 13 21:00 20.0 302 M
APR 15 4:01 APR 14 21:01 19.7 301 M FQ
APR 16 4:03 APR 15 21:03 19.5 301 M
APR 17 4:04 APR 16 21:04 19.1 300 M
APR 18 4:05 APR 17 21:05 18.8 299 M
APR 19 4:06 APR 18 21:06 18.4 299 M
APR 20 4:07 APR 19 21:07 18.0 298 M
APR 21 4:08 APR 20 21:09 17.6 298 M
APR 22 4:10 APR 21 21:10 17.1 297 M
APR 23 4:11 APR 22 21:11 16.6 297 M Full
APR 24 4:12 APR 23 21:12 16.0 296 M
APR 25 4:13 APR 24 21:13 15.5 296
APR 26 4:14 APR 25 21:14 14.9 295
APR 27 4:16 APR 26 21:16 14.3 295
APR 28 4:17 APR 27 21:17 13.6 295
APR 29 4:18 APR 28 21:18 13.0 294
APR 30 4:19 APR 29 21:19 12.3 294 LQ
MAY 1 4:20 APR 30 21:20 11.6 294
MAY 2 4:22 MAY 1 21:22 10.9 293
MAY 3 4:23 MAY 2 21:23 10.2 293
MAY 4 4:24 MAY 3 21:24 9.5 293
MAY 5 4:25 MAY 4 21:25 8.7 293
MAY 6 4:27 MAY 5 21:27 8.0 293
MAY 7 4:28 MAY 6 21:28 7.2 293 New
MAY 8 4:29 MAY 7 21:29 6.4 292
MAY 9 4:30 MAY 8 21:30 5.6 292 M
M = Moon above horizon.
Drennon/CVC Comet Pagehttp://www.theworks.com/users/bdrennon/comet.htm
Drennon Dolphin Websurferhttp://www.theworks.com/users/bdrennon
CVC home pagehttp://www.cvc.org