Here are some useful calendars ( .pdf format) showing astronomical data for several sites in Oklahoma and elsewhere. The calendars were computed using a slightly modified version of the c program written by John Thorstensen of Dartmouth College.
NOTE: Depending on how your browser is set up, clicking on a year will either display the pdf calendar, or download the pdf to you computer. If nothing seems to happen, look for the pdf file in your "Downloads" directory (or wherever your OS puts downloaded files).
University of Oklahoma campus observatory: 2024 2025
OkieTex site (near Kenton, OK): 2024 2025
Lowell Discovery Channel Telescope: 2024 2025
Kitt Peak National Observatory: 2024 2025
Cerro Tololo Interamerican Observatory: 2024 2025
Siding Spring (Australia): 2024 2025
Sierra Ridge Observatory (California): 2024 2025
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Here is an example, showing the calendar for the 2014 OkieTex star party, along with explanations of the various columns:
**2014 OkieTex*** ***** 2014 SEPTEMBER *****
Calendar for Okie-Tex, west longitude (h.m.s) = 6 51 48, latitude (d.m) = 36 53.9
Rise/set times in Central time ( 6 hr W), uncorrected for elevation, DAYLIGHT time used, * shows clock reset.
Moon info is for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College.
Date (eve/morn) LMST ---------- Sun: -------- LST twilight: --------- Moon: ---------------- Twi-Twi
midn set twi.end twi.beg rise eve morn rise set %illum RA Dec hours
Sat Sep 20/Sun Sep 21 22 08 19 52 21 19 6 12 7 39 19 26 4 21 5 17 17 53 8 9 42.2 8 38 8.9
Sun Sep 21/Mon Sep 22 22 12 19 50 21 17 6 13 7 40 19 29 4 26 6 12 18 26 4 10 27.5 5 12 8.9
Mon Sep 22/Tue Sep 23 22 16 19 49 21 15 6 14 7 41 19 31 4 31 7 07 18 57 1 11 12.6 1 32 9.0
Tue Sep 23/Wed Sep 24 22 20 19 47 21 14 6 15 7 41 19 33 4 36 ..... 19 28 0 11 58.0 - 2 16 9.0
Wed Sep 24/Thu Sep 25 22 24 19 46 21 12 6 16 7 42 19 36 4 41 ..... 19 59 1 12 44.1 - 6 03 9.1
Thu Sep 25/Fri Sep 26 22 28 19 44 21 10 6 16 7 43 19 38 4 45 ..... 20 33 4 13 31.5 - 9 39 9.1
Fri Sep 26/Sat Sep 27 22 32 19 43 21 09 6 17 7 44 19 40 4 50 ..... 21 08 8 14 20.7 -12 55 9.1
Sat Sep 27/Sun Sep 28 22 36 19 41 21 07 6 18 7 45 19 43 4 55 ..... 21 48 15 15 11.8 -15 40 9.2
Sun Sep 28/Mon Sep 29 22 40 19 40 21 06 6 19 7 45 19 45 5 00 ..... 22 31 23 16 05.1 -17 43 9.2
^^^^^^^(1)^^^^^^^^^^^ ^(2)^ ^(3)^ ^(4)^ ^(5)^ ^(6)^ ^(7)^ ^(8)^ ^(9)^ ^(10)^ ^(11) ^(12)^ ^(13)^ ^(14)^
(1) Events for one night (which of course covers parts of 2 calendar dates) Calendars for several Oklahoma
(2) Local Sideral Time (LST) at midnight sites can be found at my web
(3) Time of sunset site (no www. needed, note
(4) Time of end of evening (astronomical) twilight (Sun more than 18 its .net , not .com or .edu):
degrees below horizon)
(5) Time of start of morning twilight hildaandtrojanasteroids.net
(6) Time of sunrise
(7) LST at time of (4)- end of evening twilight Bill Romanishin:
(8) LST at time of (5)- start of morning twilight wromanishin at ou.edu
(9) Time of Moon rise
| .... Moon rise or set during bright day (8AM to 4PM)
(10) Time of Moon set
(11) Percent of face of Moon illuminated (new = 0%, full= 100%)
(12) Right Ascension of Moon at midnight
(13) Declination of Moon at midnight
(14) number of hours between twilights (time between (4) and (5))