The bold row is the date which is the apparent azimuth
standstill limit for that location (using JPL).
The red dates are dates mentioned by
Meeus ([1997], table 5A) as geocentric major
(declination) standstill limits.
The below columns mean:
Date and time [UTC],
C(ivil)/N(autical)/A(stronomical)twilight/*=sun above horizon,
t(ransit), azimuth, apparent altitude centre Moon, Moon phase
(full=100%)
Calanais I
Northern:
2025-Mar-07
19:32 N
t 180.13
60.03 62.4
2025-Apr-03 17:24 *
t 180.22
60.00 35.2
2024-Oct-22 04:38
t 180.21
59.97 71.9
2024-Aug-28 07:57 *
t 180.10
59.95 29.8
2025-Oct-12 04:59 A
t 180.24
59.87 67.2
2024-Sep-24 05:51 C
t 180.42
59.86 55.9
2024-Mar-17 19:07 C
t 180.31
59.86 56.5
2024-Apr-13 16:56 *
t 180.23
59.86 29.3
2025-Aug-18 08:11 *
t 180.30
59.82 26.7
2025-Sep-15 07:07 *
t 180.31
59.80 40.5
Southern:
2025-Mar-22
06:25 *
t 180.13
2.43 52.2
2024-Oct-09 17:31 *
t 180.06
2.48 39.2
2025-Sep-01 19:28 C
t 180.10
2.53 64.8
2024-Aug-15 20:56 C
t 180.05
2.55 80.8
2024-Nov-05 15:26 *
t 180.02
2.55 15.8
2024-Apr-01 05:52 C
t 180.20
2.56 59.6
2024-Sep-11 18:43 *
t 180.11
2.58 55.5
2025-Feb-23 08:36 *
t 180.01
2.58 25.2
2025-Jan-26 09:54 *
t 180.03
2.60 11.3
2025-Apr-18 04:18 N
t 180.02
2.61 77.5