Understanding >Astronomical calculations
2019.-CALENDAR-. JANUARY FEBRUARY MARCH ------------------------------ ------------------------------ ------------------------------ DAY DAY & NO DAY DAY & NO DAY DAY & NO ------------------- --------- ------------------- --------- ------------------- --------- OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK AT 12H UTC AT 12H UTC AT 12H UTC ------------------- --------- ------------------- --------- ------------------- --------- 245 245 245 1 1 8485 TUE. 1 32 8516 FRI. 1 60 8544 FRI. 2 2 8486 WED. 2 33 8517 SAM. 2 61 8545 SAM. 3 3 8487 THU. 1 ! 3 34 8518 SUN. ---- 3 62 8546 SUN. ---- 4 4 8488 FRI. 4 35 8519 MON. ---- 4 63 8547 MON. ---- 5 5 8489 SAM. 5 36 8520 TUE. 5 64 8548 TUE. 6 6 8490 SUN. ---- 6 37 8521 WED. 6 65 8549 WED. 7 7 8491 MON. ---- 7 38 8522 THU. 6 ! 7 66 8550 THU. 10 ! 8 8 8492 TUE. 8 39 8523 FRI. 8 67 8551 FRI. 9 9 8493 WED. 9 40 8524 SAM. 9 68 8552 SAM. 10 10 8494 THU. 2 ! 10 41 8525 SUN. ---- 10 69 8553 SUN. ---- 11 11 8495 FRI. 11 42 8526 MON. ---- 11 70 8554 MON. ---- 12 12 8496 SAM. 12 43 8527 TUE. 12 71 8555 TUE. 13 13 8497 SUN. ---- 13 44 8528 WED. 13 72 8556 WED. 14 14 8498 MON. ---- 14 45 8529 THU. 7 ! 14 73 8557 THU. 11 ! 15 15 8499 TUE. 15 46 8530 FRI. 15 74 8558 FRI. 16 16 8500 WED. 16 47 8531 SAM. 16 75 8559 SAM. 17 17 8501 THU. 3 ! 17 48 8532 SUN. ---- 17 76 8560 SUN. ---- 18 18 8502 FRI. 18 49 8533 MON. ---- 18 77 8561 MON. ---- 19 19 8503 SAM. 19 50 8534 TUE. 19 78 8562 TUE. 20 20 8504 SUN. ---- 20 51 8535 WED. 20 79 8563 WED. 21 21 8505 MON. ---- 21 52 8536 THU. 8 ! 21 80 8564 THU. 12 ! 22 22 8506 TUE. 22 53 8537 FRI. 22 81 8565 FRI. 23 23 8507 WED. 23 54 8538 SAM. 23 82 8566 SAM. 24 24 8508 THU. 4 ! 24 55 8539 SUN. ---- 24 83 8567 SUN. ---- 25 25 8509 FRI. 25 56 8540 MON. ---- 25 84 8568 MON. ---- 26 26 8510 SAM. 26 57 8541 TUE. 26 85 8569 TUE. 27 27 8511 SUN. ---- 27 58 8542 WED. 27 86 8570 WED. 28 28 8512 MON. ---- 28 59 8543 THU. 9 ! 28 87 8571 THU. 13 ! 29 29 8513 TUE. 29 88 8572 FRI. 30 30 8514 WED. 30 89 8573 SAM. 31 31 8515 THU. 5 ! 31 90 8574 SUN. ---- ------------------------------ ------------------------------ ------------------------------ 2019.-CALENDAR-. APRIL MAY JUNE ------------------------------ ------------------------------ ------------------------------ DAY DAY & NO DAY DAY & NO DAY DAY & NO ------------------- --------- ------------------- --------- ------------------- --------- OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK AT 12H UTC AT 12H UTC AT 12H UTC ------------------- --------- ------------------- --------- ------------------- --------- 245 245 245 1 91 8575 MON. ---- 1 121 8605 WED. 1 152 8636 SAM. 2 92 8576 TUE. 2 122 8606 THU. 18 ! 2 153 8637 SUN. ---- 3 93 8577 WED. 3 123 8607 FRI. 3 154 8638 MON. ---- 4 94 8578 THU. 14 ! 4 124 8608 SAM. 4 155 8639 TUE. 5 95 8579 FRI. 5 125 8609 SUN. ---- 5 156 8640 WED. 6 96 8580 SAM. 6 126 8610 MON. ---- 6 157 8641 THU. 23 ! 7 97 8581 SUN. ---- 7 127 8611 TUE. 7 158 8642 FRI. 8 98 8582 MON. ---- 8 128 8612 WED. 8 159 8643 SAM. 9 99 8583 TUE. 9 129 8613 THU. 19 ! 9 160 8644 SUN. ---- 10 100 8584 WED. 10 130 8614 FRI. 10 161 8645 MON. ---- 11 101 8585 THU. 15 ! 11 131 8615 SAM. 11 162 8646 TUE. 12 102 8586 FRI. 12 132 8616 SUN. ---- 12 163 8647 WED. 13 103 8587 SAM. 13 133 8617 MON. ---- 13 164 8648 THU. 24 ! 14 104 8588 SUN. ---- 14 134 8618 TUE. 14 165 8649 FRI. 15 105 8589 MON. ---- 15 135 8619 WED. 15 166 8650 SAM. 16 106 8590 TUE. 16 136 8620 THU. 20 ! 16 167 8651 SUN. ---- 17 107 8591 WED. 17 137 8621 FRI. 17 168 8652 MON. ---- 18 108 8592 THU. 16 ! 18 138 8622 SAM. 18 169 8653 TUE. 19 109 8593 FRI. 19 139 8623 SUN. ---- 19 170 8654 WED. 20 110 8594 SAM. 20 140 8624 MON. ---- 20 171 8655 THU. 25 ! 21 111 8595 SUN. ---- 21 141 8625 TUE. 21 172 8656 FRI. 22 112 8596 MON. ---- 22 142 8626 WED. 22 173 8657 SAM. 23 113 8597 TUE. 23 143 8627 THU. 21 ! 23 174 8658 SUN. ---- 24 114 8598 WED. 24 144 8628 FRI. 24 175 8659 MON. ---- 25 115 8599 THU. 17 ! 25 145 8629 SAM. 25 176 8660 TUE. 26 116 8600 FRI. 26 146 8630 SUN. ---- 26 177 8661 WED. 27 117 8601 SAM. 27 147 8631 MON. ---- 27 178 8662 THU. 26 ! 28 118 8602 SUN. ---- 28 148 8632 TUE. 28 179 8663 FRI. 29 119 8603 MON. ---- 29 149 8633 WED. 29 180 8664 SAM. 30 120 8604 TUE. 30 150 8634 THU. 22 ! 30 181 8665 SUN. ---- 31 151 8635 FRI. ------------------------------ ------------------------------ ------------------------------ 2019.-CALENDAR-. JULY AUGUST SEPTEMBER ------------------------------ ------------------------------ ------------------------------ DAY DAY & NO DAY DAY & NO DAY DAY & NO ------------------- --------- ------------------- --------- ------------------- --------- OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK AT 12H UTC AT 12H UTC AT 12H UTC ------------------- --------- ------------------- --------- ------------------- --------- 245 245 245 1 182 8666 MON. ---- 1 213 8697 THU. 31 ! 1 244 8728 SUN. ---- 2 183 8667 TUE. 2 214 8698 FRI. 2 245 8729 MON. ---- 3 184 8668 WED. 3 215 8699 SAM. 3 246 8730 TUE. 4 185 8669 THU. 27 ! 4 216 8700 SUN. ---- 4 247 8731 WED. 5 186 8670 FRI. 5 217 8701 MON. ---- 5 248 8732 THU. 36 ! 6 187 8671 SAM. 6 218 8702 TUE. 6 249 8733 FRI. 7 188 8672 SUN. ---- 7 219 8703 WED. 7 250 8734 SAM. 8 189 8673 MON. ---- 8 220 8704 THU. 32 ! 8 251 8735 SUN. ---- 9 190 8674 TUE. 9 221 8705 FRI. 9 252 8736 MON. ---- 10 191 8675 WED. 10 222 8706 SAM. 10 253 8737 TUE. 11 192 8676 THU. 28 ! 11 223 8707 SUN. ---- 11 254 8738 WED. 12 193 8677 FRI. 12 224 8708 MON. ---- 12 255 8739 THU. 37 ! 13 194 8678 SAM. 13 225 8709 TUE. 13 256 8740 FRI. 14 195 8679 SUN. ---- 14 226 8710 WED. 14 257 8741 SAM. 15 196 8680 MON. ---- 15 227 8711 THU. 33 ! 15 258 8742 SUN. ---- 16 197 8681 TUE. 16 228 8712 FRI. 16 259 8743 MON. ---- 17 198 8682 WED. 17 229 8713 SAM. 17 260 8744 TUE. 18 199 8683 THU. 29 ! 18 230 8714 SUN. ---- 18 261 8745 WED. 19 200 8684 FRI. 19 231 8715 MON. ---- 19 262 8746 THU. 38 ! 20 201 8685 SAM. 20 232 8716 TUE. 20 263 8747 FRI. 21 202 8686 SUN. ---- 21 233 8717 WED. 21 264 8748 SAM. 22 203 8687 MON. ---- 22 234 8718 THU. 34 ! 22 265 8749 SUN. ---- 23 204 8688 TUE. 23 235 8719 FRI. 23 266 8750 MON. ---- 24 205 8689 WED. 24 236 8720 SAM. 24 267 8751 TUE. 25 206 8690 THU. 30 ! 25 237 8721 SUN. ---- 25 268 8752 WED. 26 207 8691 FRI. 26 238 8722 MON. ---- 26 269 8753 THU. 39 ! 27 208 8692 SAM. 27 239 8723 TUE. 27 270 8754 FRI. 28 209 8693 SUN. ---- 28 240 8724 WED. 28 271 8755 SAM. 29 210 8694 MON. ---- 29 241 8725 THU. 35 ! 29 272 8756 SUN. ---- 30 211 8695 TUE. 30 242 8726 FRI. 30 273 8757 MON. ---- 31 212 8696 WED. 31 243 8727 SAM. ------------------------------ ------------------------------ ------------------------------ 2019.-CALENDAR-. OCTOBER NOVEMBER DECEMBER ------------------------------ ------------------------------ ------------------------------ DAY DAY & NO DAY DAY & NO DAY DAY & NO ------------------- --------- ------------------- --------- ------------------- --------- OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK AT 12H UTC AT 12H UTC AT 12H UTC ------------------- --------- ------------------- --------- ------------------- --------- 245 245 245 1 274 8758 TUE. 1 305 8789 FRI. 1 335 8819 SUN. ---- 2 275 8759 WED. 2 306 8790 SAM. 2 336 8820 MON. ---- 3 276 8760 THU. 40 ! 3 307 8791 SUN. ---- 3 337 8821 TUE. 4 277 8761 FRI. 4 308 8792 MON. ---- 4 338 8822 WED. 5 278 8762 SAM. 5 309 8793 TUE. 5 339 8823 THU. 49 ! 6 279 8763 SUN. ---- 6 310 8794 WED. 6 340 8824 FRI. 7 280 8764 MON. ---- 7 311 8795 THU. 45 ! 7 341 8825 SAM. 8 281 8765 TUE. 8 312 8796 FRI. 8 342 8826 SUN. ---- 9 282 8766 WED. 9 313 8797 SAM. 9 343 8827 MON. ---- 10 283 8767 THU. 41 ! 10 314 8798 SUN. ---- 10 344 8828 TUE. 11 284 8768 FRI. 11 315 8799 MON. ---- 11 345 8829 WED. 12 285 8769 SAM. 12 316 8800 TUE. 12 346 8830 THU. 50 ! 13 286 8770 SUN. ---- 13 317 8801 WED. 13 347 8831 FRI. 14 287 8771 MON. ---- 14 318 8802 THU. 46 ! 14 348 8832 SAM. 15 288 8772 TUE. 15 319 8803 FRI. 15 349 8833 SUN. ---- 16 289 8773 WED. 16 320 8804 SAM. 16 350 8834 MON. ---- 17 290 8774 THU. 42 ! 17 321 8805 SUN. ---- 17 351 8835 TUE. 18 291 8775 FRI. 18 322 8806 MON. ---- 18 352 8836 WED. 19 292 8776 SAM. 19 323 8807 TUE. 19 353 8837 THU. 51 ! 20 293 8777 SUN. ---- 20 324 8808 WED. 20 354 8838 FRI. 21 294 8778 MON. ---- 21 325 8809 THU. 47 ! 21 355 8839 SAM. 22 295 8779 TUE. 22 326 8810 FRI. 22 356 8840 SUN. ---- 23 296 8780 WED. 23 327 8811 SAM. 23 357 8841 MON. ---- 24 297 8781 THU. 43 ! 24 328 8812 SUN. ---- 24 358 8842 TUE. 25 298 8782 FRI. 25 329 8813 MON. ---- 25 359 8843 WED. 26 299 8783 SAM. 26 330 8814 TUE. 26 360 8844 THU. 52 ! 27 300 8784 SUN. ---- 27 331 8815 WED. 27 361 8845 FRI. 28 301 8785 MON. ---- 28 332 8816 THU. 48 ! 28 362 8846 SAM. 29 302 8786 TUE. 29 333 8817 FRI. 29 363 8847 SUN. ---- 30 303 8787 WED. 30 334 8818 SAM. 30 364 8848 MON. ---- 31 304 8788 THU. 44 ! 31 365 8849 TUE. ------------------------------ ------------------------------ ------------------------------
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