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Die Exzentrizität der Erdbahn (e) bewirkt eine periodische Veränderung der wahren Sonne bezogen auf die mittlere Sonne über einen ganzen Umlauf der Erde mit einer Amplitude von etwa 8 Minuten. Der Startpunkt dieser Periode ist das Perihel Anfang Januar. Durch die Schiefe der Ekliptik (s) entsteht eine Periodenlänge von einem halben Umlauf mit dem Start am Frühlingspunkt und einer Amplitude von 10 Minuten.
Die Wirkungen dieser beiden Erscheinungen (e) und (s) auf den scheinbaren Sonnenlauf überlagern sich, und dadurch hat die Zeitgleichung derzeit
Durch die Präzession der Erdachse verändert sich die Werte über die Jahrtausende allmählich.
| 50 ° N / 7.5 ° E | ||
|---|---|---|
| 2026 | Zeitgleichung | Deklination |
| 01.01 | -3.404 | -22.97668 ° |
| 02.01 | -3.880 | -22.88820 ° |
| 03.01 | -4.349 | -22.79212 ° |
| 04.01 | -4.812 | -22.68850 ° |
| 05.01 | -5.267 | -22.57739 ° |
| 06.01 | -5.716 | -22.45883 ° |
| 07.01 | -6.156 | -22.33289 ° |
| 08.01 | -6.588 | -22.19963 ° |
| 09.01 | -7.011 | -22.05911 ° |
| 10.01 | -7.425 | -21.91140 ° |
| 11.01 | -7.829 | -21.75657 ° |
| 12.01 | -8.222 | -21.59470 ° |
| 13.01 | -8.366 | -21.42586 ° |
| 14.01 | -8.748 | -21.25014 ° |
| 15.01 | -9.119 | -21.06760 ° |
| 16.01 | -9.479 | -20.87835 ° |
| 17.01 | -9.828 | -20.68247 ° |
| 18.01 | -10.164 | -20.48004 ° |
| 19.01 | -10.489 | -20.27116 ° |
| 20.01 | -10.800 | -20.05593 ° |
| 21.01 | -11.100 | -19.83444 ° |
| 22.01 | -11.386 | -19.60678 ° |
| 23.01 | -11.660 | -19.37307 ° |
| 24.01 | -11.920 | -19.13340 ° |
| 25.01 | -12.166 | -18.88787 ° |
| 26.01 | -12.399 | -18.63659 ° |
| 27.01 | -12.619 | -18.37966 ° |
| 28.01 | -12.824 | -18.11720 ° |
| 29.01 | -13.015 | -17.84931 ° |
| 30.01 | -13.193 | -17.57610 ° |
| 31.01 | -13.356 | -17.29769 ° |
| 01.02 | -13.506 | -17.01417 ° |
| 02.02 | -13.642 | -16.72568 ° |
| 03.02 | -13.763 | -16.43231 ° |
| 04.02 | -13.871 | -16.13418 ° |
| 05.02 | -13.964 | -15.83142 ° |
| 06.02 | -14.044 | -15.52412 ° |
| 07.02 | -14.110 | -15.21241 ° |
| 08.02 | -14.163 | -14.89640 ° |
| 09.02 | -14.201 | -14.57621 ° |
| 10.02 | -14.226 | -14.25195 ° |
| 11.02 | -14.238 | -13.92374 ° |
| 12.02 | -14.237 | -13.59170 ° |
| 13.02 | -14.222 | -13.25593 ° |
| 14.02 | -14.195 | -12.91656 ° |
| 15.02 | -14.155 | -12.57371 ° |
| 16.02 | -14.103 | -12.22748 ° |
| 17.02 | -14.038 | -11.87799 ° |
| 18.02 | -13.962 | -11.52536 ° |
| 19.02 | -13.873 | -11.16971 ° |
| 20.02 | -13.774 | -10.81114 ° |
| 21.02 | -13.662 | -10.44978 ° |
| 22.02 | -13.540 | -10.08573 ° |
| 23.02 | -13.407 | -9.71911 ° |
| 24.02 | -13.184 | -9.35003 ° |
| 25.02 | -13.032 | -8.97860 ° |
| 26.02 | -12.870 | -8.60495 ° |
| 27.02 | -12.698 | -8.22917 ° |
| 28.02 | -12.518 | -7.85138 ° |
| 01.03 | -12.328 | -7.47169 ° |
| 02.03 | -12.130 | -7.09022 ° |
| 03.03 | -11.923 | -6.70706 ° |
| 04.03 | -11.708 | -6.32234 ° |
| 05.03 | -11.485 | -5.93615 ° |
| 06.03 | -11.255 | -5.54861 ° |
| 07.03 | -11.018 | -5.15983 ° |
| 08.03 | -10.775 | -4.76991 ° |
| 09.03 | -10.524 | -4.37896 ° |
| 10.03 | -10.268 | -3.98708 ° |
| 11.03 | -10.006 | -3.59438 ° |
| 12.03 | -9.739 | -3.20097 ° |
| 13.03 | -9.466 | -2.80696 ° |
| 14.03 | -9.189 | -2.41243 ° |
| 15.03 | -8.908 | -2.01751 ° |
| 16.03 | -8.623 | -1.62228 ° |
| 17.03 | -8.334 | -1.22687 ° |
| 18.03 | -8.042 | -0.83136 ° |
| 19.03 | -7.747 | -0.43586 ° |
| 20.03 | -7.450 | -0.04047 ° |
| 21.03 | -7.151 | 0.35471 ° |
| 22.03 | -6.849 | 0.74958 ° |
| 23.03 | -6.876 | 1.14403 ° |
| 24.03 | -6.571 | 1.53797 ° |
| 25.03 | -6.265 | 1.93130 ° |
| 26.03 | -5.958 | 2.32392 ° |
| 27.03 | -5.651 | 2.71572 ° |
| 28.03 | -5.343 | 3.10662 ° |
| 29.03 | -5.037 | 3.49651 ° |
| 30.03 | -4.731 | 3.88530 ° |
| 31.03 | -4.425 | 4.27288 ° |
| 01.04 | -4.122 | 4.65917 ° |
| 02.04 | -3.819 | 5.04406 ° |
| 03.04 | -3.519 | 5.42745 ° |
| 04.04 | -3.221 | 5.80926 ° |
| 05.04 | -2.926 | 6.18938 ° |
| 06.04 | -2.634 | 6.56772 ° |
| 07.04 | -2.345 | 6.94419 ° |
| 08.04 | -2.059 | 7.31868 ° |
| 09.04 | -1.778 | 7.69111 ° |
| 10.04 | -1.501 | 8.06137 ° |
| 11.04 | -1.228 | 8.42937 ° |
| 12.04 | -0.960 | 8.79503 ° |
| 13.04 | -0.697 | 9.15824 ° |
| 14.04 | -0.440 | 9.51891 ° |
| 15.04 | -0.189 | 9.87694 ° |
| 16.04 | 0.057 | 10.23225 ° |
| 17.04 | 0.296 | 10.58474 ° |
| 18.04 | 0.529 | 10.93432 ° |
| 19.04 | 0.756 | 11.28089 ° |
| 20.04 | 0.975 | 11.62436 ° |
| 21.04 | 1.187 | 11.96464 ° |
| 22.04 | 1.392 | 12.30164 ° |
| 23.04 | 1.589 | 12.63526 ° |
| 24.04 | 1.778 | 12.96542 ° |
| 25.04 | 1.960 | 13.29203 ° |
| 26.04 | 2.132 | 13.61498 ° |
| 27.04 | 2.297 | 13.93420 ° |
| 28.04 | 2.453 | 14.24959 ° |
| 29.04 | 2.600 | 14.56106 ° |
| 30.04 | 2.738 | 14.86853 ° |
| 01.05 | 2.867 | 15.17191 ° |
| 02.05 | 2.987 | 15.47110 ° |
| 03.05 | 3.097 | 15.76602 ° |
| 04.05 | 3.199 | 16.05658 ° |
| 05.05 | 3.224 | 16.34270 ° |
| 06.05 | 3.304 | 16.62429 ° |
| 07.05 | 3.374 | 16.90127 ° |
| 08.05 | 3.435 | 17.17355 ° |
| 09.05 | 3.486 | 17.44104 ° |
| 10.05 | 3.527 | 17.70367 ° |
| 11.05 | 3.558 | 17.96136 ° |
| 12.05 | 3.579 | 18.21401 ° |
| 13.05 | 3.591 | 18.46156 ° |
| 14.05 | 3.592 | 18.70393 ° |
| 15.05 | 3.584 | 18.94102 ° |
| 16.05 | 3.567 | 19.17278 ° |
| 17.05 | 3.540 | 19.39912 ° |
| 18.05 | 3.503 | 19.61996 ° |
| 19.05 | 3.457 | 19.83524 ° |
| 20.05 | 3.401 | 20.04489 ° |
| 21.05 | 3.337 | 20.24882 ° |
| 22.05 | 3.263 | 20.44698 ° |
| 23.05 | 3.180 | 20.63930 ° |
| 24.05 | 3.088 | 20.82570 ° |
| 25.05 | 2.988 | 21.00613 ° |
| 26.05 | 2.879 | 21.18053 ° |
| 27.05 | 2.762 | 21.34883 ° |
| 28.05 | 2.637 | 21.51097 ° |
| 29.05 | 2.504 | 21.66689 ° |
| 30.05 | 2.364 | 21.81655 ° |
| 31.05 | 2.217 | 21.95988 ° |
| 01.06 | 2.333 | 22.09684 ° |
| 02.06 | 2.180 | 22.22738 ° |
| 03.06 | 2.021 | 22.35145 ° |
| 04.06 | 1.855 | 22.46901 ° |
| 05.06 | 1.683 | 22.58001 ° |
| 06.06 | 1.505 | 22.68441 ° |
| 07.06 | 1.321 | 22.78218 ° |
| 08.06 | 1.133 | 22.87328 ° |
| 09.06 | 0.939 | 22.95767 ° |
| 10.06 | 0.741 | 23.03534 ° |
| 11.06 | 0.539 | 23.10624 ° |
| 12.06 | 0.334 | 23.17036 ° |
| 13.06 | 0.125 | 23.22768 ° |
| 14.06 | -0.087 | 23.27816 ° |
| 15.06 | -0.301 | 23.32180 ° |
| 16.06 | -0.517 | 23.35858 ° |
| 17.06 | -0.736 | 23.38849 ° |
| 18.06 | -0.955 | 23.41151 ° |
| 19.06 | -1.176 | 23.42765 ° |
| 20.06 | -1.397 | 23.43690 ° |
| 21.06 | -1.618 | 23.43926 ° |
| 22.06 | -1.839 | 23.43472 ° |
| 23.06 | -2.059 | 23.42331 ° |
| 24.06 | -2.278 | 23.40501 ° |
| 25.06 | -2.495 | 23.37984 ° |
| 26.06 | -2.711 | 23.34782 ° |
| 27.06 | -2.924 | 23.30896 ° |
| 28.06 | -3.134 | 23.26328 ° |
| 29.06 | -3.341 | 23.21079 ° |
| 30.06 | -3.545 | 23.15153 ° |
| 01.07 | -3.744 | 23.08551 ° |
| 02.07 | -3.940 | 23.01277 ° |
| 03.07 | -4.131 | 22.93333 ° |
| 04.07 | -4.316 | 22.84723 ° |
| 05.07 | -4.497 | 22.75451 ° |
| 06.07 | -4.671 | 22.65521 ° |
| 07.07 | -4.840 | 22.54935 ° |
| 08.07 | -5.002 | 22.43700 ° |
| 09.07 | -5.157 | 22.31818 ° |
| 10.07 | -5.305 | 22.19296 ° |
| 11.07 | -5.446 | 22.06137 ° |
| 12.07 | -5.579 | 21.92347 ° |
| 13.07 | -5.843 | 21.77932 ° |
| 14.07 | -5.959 | 21.62896 ° |
| 15.07 | -6.067 | 21.47245 ° |
| 16.07 | -6.167 | 21.30986 ° |
| 17.07 | -6.257 | 21.14125 ° |
| 18.07 | -6.339 | 20.96667 ° |
| 19.07 | -6.411 | 20.78619 ° |
| 20.07 | -6.474 | 20.59987 ° |
| 21.07 | -6.527 | 20.40779 ° |
| 22.07 | -6.571 | 20.21001 ° |
| 23.07 | -6.604 | 20.00660 ° |
| 24.07 | -6.628 | 19.79764 ° |
| 25.07 | -6.641 | 19.58318 ° |
| 26.07 | -6.644 | 19.36332 ° |
| 27.07 | -6.637 | 19.13812 ° |
| 28.07 | -6.620 | 18.90765 ° |
| 29.07 | -6.592 | 18.67200 ° |
| 30.07 | -6.553 | 18.43124 ° |
| 31.07 | -6.505 | 18.18545 ° |
| 01.08 | -6.446 | 17.93471 ° |
| 02.08 | -6.376 | 17.67911 ° |
| 03.08 | -6.296 | 17.41871 ° |
| 04.08 | -6.206 | 17.15360 ° |
| 05.08 | -6.105 | 16.88387 ° |
| 06.08 | -5.994 | 16.60960 ° |
| 07.08 | -5.872 | 16.33087 ° |
| 08.08 | -5.741 | 16.04776 ° |
| 09.08 | -5.599 | 15.76037 ° |
| 10.08 | -5.491 | 15.46877 ° |
| 11.08 | -5.341 | 15.17304 ° |
| 12.08 | -5.181 | 14.87329 ° |
| 13.08 | -5.012 | 14.56958 ° |
| 14.08 | -4.833 | 14.26201 ° |
| 15.08 | -4.645 | 13.95067 ° |
| 16.08 | -4.447 | 13.63564 ° |
| 17.08 | -4.241 | 13.31700 ° |
| 18.08 | -4.026 | 12.99486 ° |
| 19.08 | -3.801 | 12.66928 ° |
| 20.08 | -3.569 | 12.34037 ° |
| 21.08 | -3.328 | 12.00820 ° |
| 22.08 | -3.078 | 11.67288 ° |
| 23.08 | -2.821 | 11.33448 ° |
| 24.08 | -2.557 | 10.99309 ° |
| 25.08 | -2.285 | 10.64880 ° |
| 26.08 | -2.006 | 10.30171 ° |
| 27.08 | -1.720 | 9.95190 ° |
| 28.08 | -1.428 | 9.59945 ° |
| 29.08 | -1.129 | 9.24446 ° |
| 30.08 | -0.824 | 8.88702 ° |
| 31.08 | -0.513 | 8.52722 ° |
| 01.09 | -0.197 | 8.16514 ° |
| 02.09 | 0.124 | 7.80088 ° |
| 03.09 | 0.451 | 7.43452 ° |
| 04.09 | 0.782 | 7.06616 ° |
| 05.09 | 1.117 | 6.69588 ° |
| 06.09 | 1.457 | 6.32378 ° |
| 07.09 | 1.800 | 5.94993 ° |
| 08.09 | 2.147 | 5.57445 ° |
| 09.09 | 2.496 | 5.19741 ° |
| 10.09 | 2.848 | 4.81890 ° |
| 11.09 | 3.203 | 4.43902 ° |
| 12.09 | 3.560 | 4.05786 ° |
| 13.09 | 3.918 | 3.67551 ° |
| 14.09 | 4.278 | 3.29206 ° |
| 15.09 | 4.639 | 2.90760 ° |
| 16.09 | 5.000 | 2.52222 ° |
| 17.09 | 5.362 | 2.13602 ° |
| 18.09 | 5.724 | 1.74909 ° |
| 19.09 | 6.086 | 1.36152 ° |
| 20.09 | 6.447 | 0.97340 ° |
| 21.09 | 6.776 | 0.58483 ° |
| 22.09 | 7.137 | 0.19590 ° |
| 23.09 | 7.496 | -0.19329 ° |
| 24.09 | 7.852 | -0.58266 ° |
| 25.09 | 8.207 | -0.97210 ° |
| 26.09 | 8.558 | -1.36151 ° |
| 27.09 | 8.906 | -1.75082 ° |
| 28.09 | 9.251 | -2.13991 ° |
| 29.09 | 9.592 | -2.52869 ° |
| 30.09 | 9.928 | -2.91707 ° |
| 01.10 | 10.260 | -3.30494 ° |
| 02.10 | 10.588 | -3.69222 ° |
| 03.10 | 10.909 | -4.07879 ° |
| 04.10 | 11.226 | -4.46457 ° |
| 05.10 | 11.536 | -4.84945 ° |
| 06.10 | 11.840 | -5.23333 ° |
| 07.10 | 12.137 | -5.61611 ° |
| 08.10 | 12.427 | -5.99769 ° |
| 09.10 | 12.709 | -6.37797 ° |
| 10.10 | 12.984 | -6.75685 ° |
| 11.10 | 13.251 | -7.13422 ° |
| 12.10 | 13.509 | -7.50999 ° |
| 13.10 | 13.759 | -7.88403 ° |
| 14.10 | 14.000 | -8.25626 ° |
| 15.10 | 14.231 | -8.62657 ° |
| 16.10 | 14.453 | -8.99485 ° |
| 17.10 | 14.665 | -9.36099 ° |
| 18.10 | 14.640 | -9.72489 ° |
| 19.10 | 14.840 | -10.08644 ° |
| 20.10 | 15.028 | -10.44553 ° |
| 21.10 | 15.206 | -10.80206 ° |
| 22.10 | 15.373 | -11.15591 ° |
| 23.10 | 15.528 | -11.50698 ° |
| 24.10 | 15.672 | -11.85515 ° |
| 25.10 | 15.804 | -12.20033 ° |
| 26.10 | 15.923 | -12.54238 ° |
| 27.10 | 16.031 | -12.88121 ° |
| 28.10 | 16.125 | -13.21671 ° |
| 29.10 | 16.207 | -13.54875 ° |
| 30.10 | 16.276 | -13.87724 ° |
| 31.10 | 16.332 | -14.20205 ° |
| 01.11 | 16.374 | -14.52308 ° |
| 02.11 | 16.402 | -14.84021 ° |
| 03.11 | 16.417 | -15.15332 ° |
| 04.11 | 16.418 | -15.46232 ° |
| 05.11 | 16.404 | -15.76708 ° |
| 06.11 | 16.377 | -16.06749 ° |
| 07.11 | 16.335 | -16.36344 ° |
| 08.11 | 16.279 | -16.65481 ° |
| 09.11 | 16.208 | -16.94150 ° |
| 10.11 | 16.123 | -17.22340 ° |
| 11.11 | 16.023 | -17.50038 ° |
| 12.11 | 15.909 | -17.77235 ° |
| 13.11 | 15.781 | -18.03919 ° |
| 14.11 | 15.637 | -18.30079 ° |
| 15.11 | 15.480 | -18.55704 ° |
| 16.11 | 15.307 | -18.80784 ° |
| 17.11 | 15.121 | -19.05308 ° |
| 18.11 | 14.919 | -19.29265 ° |
| 19.11 | 14.704 | -19.52645 ° |
| 20.11 | 14.475 | -19.75437 ° |
| 21.11 | 14.231 | -19.97632 ° |
| 22.11 | 13.973 | -20.19220 ° |
| 23.11 | 13.703 | -20.40189 ° |
| 24.11 | 13.418 | -20.60532 ° |
| 25.11 | 13.121 | -20.80237 ° |
| 26.11 | 12.810 | -20.99297 ° |
| 27.11 | 12.487 | -21.17701 ° |
| 28.11 | 12.151 | -21.35442 ° |
| 29.11 | 11.920 | -21.52509 ° |
| 30.11 | 11.562 | -21.68895 ° |
| 01.12 | 11.192 | -21.84592 ° |
| 02.12 | 10.812 | -21.99592 ° |
| 03.12 | 10.420 | -22.13887 ° |
| 04.12 | 10.018 | -22.27470 ° |
| 05.12 | 9.607 | -22.40333 ° |
| 06.12 | 9.185 | -22.52470 ° |
| 07.12 | 8.755 | -22.63875 ° |
| 08.12 | 8.316 | -22.74541 ° |
| 09.12 | 7.869 | -22.84463 ° |
| 10.12 | 7.414 | -22.93636 ° |
| 11.12 | 6.952 | -23.02053 ° |
| 12.12 | 6.484 | -23.09712 ° |
| 13.12 | 6.009 | -23.16606 ° |
| 14.12 | 5.529 | -23.22733 ° |
| 15.12 | 5.044 | -23.28089 ° |
| 16.12 | 4.554 | -23.32671 ° |
| 17.12 | 4.060 | -23.36475 ° |
| 18.12 | 3.563 | -23.39500 ° |
| 19.12 | 3.064 | -23.41744 ° |
| 20.12 | 2.562 | -23.43205 ° |
| 21.12 | 2.059 | -23.43883 ° |
| 22.12 | 1.555 | -23.43775 ° |
| 23.12 | 1.051 | -23.42883 ° |
| 24.12 | 0.547 | -23.41206 ° |
| 25.12 | 0.044 | -23.38745 ° |
| 26.12 | -0.458 | -23.35501 ° |
| 27.12 | -0.605 | -23.31476 ° |
| 28.12 | -1.105 | -23.26670 ° |
| 29.12 | -1.602 | -23.21087 ° |
| 30.12 | -2.096 | -23.14729 ° |
| 31.12 | -2.586 | -23.07599 ° |
Wird die Zeitgleichung als Ordinate und die Tage als Abzisse gesetzt, ergibt sich folgende Darstellung.
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