Understanding >Astronomical calculations
2013.-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 6294 TUE. 1 32 6325 FRI. 1 60 6353 FRI. 2 2 6295 WED. 2 33 6326 SAM. 2 61 6354 SAM. 3 3 6296 THU. 1 ! 3 34 6327 SUN. ---- 3 62 6355 SUN. ---- 4 4 6297 FRI. 4 35 6328 MON. ---- 4 63 6356 MON. ---- 5 5 6298 SAM. 5 36 6329 TUE. 5 64 6357 TUE. 6 6 6299 SUN. ---- 6 37 6330 WED. 6 65 6358 WED. 7 7 6300 MON. ---- 7 38 6331 THU. 6 ! 7 66 6359 THU. 10 ! 8 8 6301 TUE. 8 39 6332 FRI. 8 67 6360 FRI. 9 9 6302 WED. 9 40 6333 SAM. 9 68 6361 SAM. 10 10 6303 THU. 2 ! 10 41 6334 SUN. ---- 10 69 6362 SUN. ---- 11 11 6304 FRI. 11 42 6335 MON. ---- 11 70 6363 MON. ---- 12 12 6305 SAM. 12 43 6336 TUE. 12 71 6364 TUE. 13 13 6306 SUN. ---- 13 44 6337 WED. 13 72 6365 WED. 14 14 6307 MON. ---- 14 45 6338 THU. 7 ! 14 73 6366 THU. 11 ! 15 15 6308 TUE. 15 46 6339 FRI. 15 74 6367 FRI. 16 16 6309 WED. 16 47 6340 SAM. 16 75 6368 SAM. 17 17 6310 THU. 3 ! 17 48 6341 SUN. ---- 17 76 6369 SUN. ---- 18 18 6311 FRI. 18 49 6342 MON. ---- 18 77 6370 MON. ---- 19 19 6312 SAM. 19 50 6343 TUE. 19 78 6371 TUE. 20 20 6313 SUN. ---- 20 51 6344 WED. 20 79 6372 WED. 21 21 6314 MON. ---- 21 52 6345 THU. 8 ! 21 80 6373 THU. 12 ! 22 22 6315 TUE. 22 53 6346 FRI. 22 81 6374 FRI. 23 23 6316 WED. 23 54 6347 SAM. 23 82 6375 SAM. 24 24 6317 THU. 4 ! 24 55 6348 SUN. ---- 24 83 6376 SUN. ---- 25 25 6318 FRI. 25 56 6349 MON. ---- 25 84 6377 MON. ---- 26 26 6319 SAM. 26 57 6350 TUE. 26 85 6378 TUE. 27 27 6320 SUN. ---- 27 58 6351 WED. 27 86 6379 WED. 28 28 6321 MON. ---- 28 59 6352 THU. 9 ! 28 87 6380 THU. 13 ! 29 29 6322 TUE. 29 88 6381 FRI. 30 30 6323 WED. 30 89 6382 SAM. 31 31 6324 THU. 5 ! 31 90 6383 SUN. ---- ------------------------------ ------------------------------ ------------------------------ 2013.-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 6384 MON. ---- 1 121 6414 WED. 1 152 6445 SAM. 2 92 6385 TUE. 2 122 6415 THU. 18 ! 2 153 6446 SUN. ---- 3 93 6386 WED. 3 123 6416 FRI. 3 154 6447 MON. ---- 4 94 6387 THU. 14 ! 4 124 6417 SAM. 4 155 6448 TUE. 5 95 6388 FRI. 5 125 6418 SUN. ---- 5 156 6449 WED. 6 96 6389 SAM. 6 126 6419 MON. ---- 6 157 6450 THU. 23 ! 7 97 6390 SUN. ---- 7 127 6420 TUE. 7 158 6451 FRI. 8 98 6391 MON. ---- 8 128 6421 WED. 8 159 6452 SAM. 9 99 6392 TUE. 9 129 6422 THU. 19 ! 9 160 6453 SUN. ---- 10 100 6393 WED. 10 130 6423 FRI. 10 161 6454 MON. ---- 11 101 6394 THU. 15 ! 11 131 6424 SAM. 11 162 6455 TUE. 12 102 6395 FRI. 12 132 6425 SUN. ---- 12 163 6456 WED. 13 103 6396 SAM. 13 133 6426 MON. ---- 13 164 6457 THU. 24 ! 14 104 6397 SUN. ---- 14 134 6427 TUE. 14 165 6458 FRI. 15 105 6398 MON. ---- 15 135 6428 WED. 15 166 6459 SAM. 16 106 6399 TUE. 16 136 6429 THU. 20 ! 16 167 6460 SUN. ---- 17 107 6400 WED. 17 137 6430 FRI. 17 168 6461 MON. ---- 18 108 6401 THU. 16 ! 18 138 6431 SAM. 18 169 6462 TUE. 19 109 6402 FRI. 19 139 6432 SUN. ---- 19 170 6463 WED. 20 110 6403 SAM. 20 140 6433 MON. ---- 20 171 6464 THU. 25 ! 21 111 6404 SUN. ---- 21 141 6434 TUE. 21 172 6465 FRI. 22 112 6405 MON. ---- 22 142 6435 WED. 22 173 6466 SAM. 23 113 6406 TUE. 23 143 6436 THU. 21 ! 23 174 6467 SUN. ---- 24 114 6407 WED. 24 144 6437 FRI. 24 175 6468 MON. ---- 25 115 6408 THU. 17 ! 25 145 6438 SAM. 25 176 6469 TUE. 26 116 6409 FRI. 26 146 6439 SUN. ---- 26 177 6470 WED. 27 117 6410 SAM. 27 147 6440 MON. ---- 27 178 6471 THU. 26 ! 28 118 6411 SUN. ---- 28 148 6441 TUE. 28 179 6472 FRI. 29 119 6412 MON. ---- 29 149 6442 WED. 29 180 6473 SAM. 30 120 6413 TUE. 30 150 6443 THU. 22 ! 30 181 6474 SUN. ---- 31 151 6444 FRI. ------------------------------ ------------------------------ ------------------------------ 2013.-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 6475 MON. ---- 1 213 6506 THU. 31 ! 1 244 6537 SUN. ---- 2 183 6476 TUE. 2 214 6507 FRI. 2 245 6538 MON. ---- 3 184 6477 WED. 3 215 6508 SAM. 3 246 6539 TUE. 4 185 6478 THU. 27 ! 4 216 6509 SUN. ---- 4 247 6540 WED. 5 186 6479 FRI. 5 217 6510 MON. ---- 5 248 6541 THU. 36 ! 6 187 6480 SAM. 6 218 6511 TUE. 6 249 6542 FRI. 7 188 6481 SUN. ---- 7 219 6512 WED. 7 250 6543 SAM. 8 189 6482 MON. ---- 8 220 6513 THU. 32 ! 8 251 6544 SUN. ---- 9 190 6483 TUE. 9 221 6514 FRI. 9 252 6545 MON. ---- 10 191 6484 WED. 10 222 6515 SAM. 10 253 6546 TUE. 11 192 6485 THU. 28 ! 11 223 6516 SUN. ---- 11 254 6547 WED. 12 193 6486 FRI. 12 224 6517 MON. ---- 12 255 6548 THU. 37 ! 13 194 6487 SAM. 13 225 6518 TUE. 13 256 6549 FRI. 14 195 6488 SUN. ---- 14 226 6519 WED. 14 257 6550 SAM. 15 196 6489 MON. ---- 15 227 6520 THU. 33 ! 15 258 6551 SUN. ---- 16 197 6490 TUE. 16 228 6521 FRI. 16 259 6552 MON. ---- 17 198 6491 WED. 17 229 6522 SAM. 17 260 6553 TUE. 18 199 6492 THU. 29 ! 18 230 6523 SUN. ---- 18 261 6554 WED. 19 200 6493 FRI. 19 231 6524 MON. ---- 19 262 6555 THU. 38 ! 20 201 6494 SAM. 20 232 6525 TUE. 20 263 6556 FRI. 21 202 6495 SUN. ---- 21 233 6526 WED. 21 264 6557 SAM. 22 203 6496 MON. ---- 22 234 6527 THU. 34 ! 22 265 6558 SUN. ---- 23 204 6497 TUE. 23 235 6528 FRI. 23 266 6559 MON. ---- 24 205 6498 WED. 24 236 6529 SAM. 24 267 6560 TUE. 25 206 6499 THU. 30 ! 25 237 6530 SUN. ---- 25 268 6561 WED. 26 207 6500 FRI. 26 238 6531 MON. ---- 26 269 6562 THU. 39 ! 27 208 6501 SAM. 27 239 6532 TUE. 27 270 6563 FRI. 28 209 6502 SUN. ---- 28 240 6533 WED. 28 271 6564 SAM. 29 210 6503 MON. ---- 29 241 6534 THU. 35 ! 29 272 6565 SUN. ---- 30 211 6504 TUE. 30 242 6535 FRI. 30 273 6566 MON. ---- 31 212 6505 WED. 31 243 6536 SAM. ------------------------------ ------------------------------ ------------------------------ 2013.-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 6567 TUE. 1 305 6598 FRI. 1 335 6628 SUN. ---- 2 275 6568 WED. 2 306 6599 SAM. 2 336 6629 MON. ---- 3 276 6569 THU. 40 ! 3 307 6600 SUN. ---- 3 337 6630 TUE. 4 277 6570 FRI. 4 308 6601 MON. ---- 4 338 6631 WED. 5 278 6571 SAM. 5 309 6602 TUE. 5 339 6632 THU. 49 ! 6 279 6572 SUN. ---- 6 310 6603 WED. 6 340 6633 FRI. 7 280 6573 MON. ---- 7 311 6604 THU. 45 ! 7 341 6634 SAM. 8 281 6574 TUE. 8 312 6605 FRI. 8 342 6635 SUN. ---- 9 282 6575 WED. 9 313 6606 SAM. 9 343 6636 MON. ---- 10 283 6576 THU. 41 ! 10 314 6607 SUN. ---- 10 344 6637 TUE. 11 284 6577 FRI. 11 315 6608 MON. ---- 11 345 6638 WED. 12 285 6578 SAM. 12 316 6609 TUE. 12 346 6639 THU. 50 ! 13 286 6579 SUN. ---- 13 317 6610 WED. 13 347 6640 FRI. 14 287 6580 MON. ---- 14 318 6611 THU. 46 ! 14 348 6641 SAM. 15 288 6581 TUE. 15 319 6612 FRI. 15 349 6642 SUN. ---- 16 289 6582 WED. 16 320 6613 SAM. 16 350 6643 MON. ---- 17 290 6583 THU. 42 ! 17 321 6614 SUN. ---- 17 351 6644 TUE. 18 291 6584 FRI. 18 322 6615 MON. ---- 18 352 6645 WED. 19 292 6585 SAM. 19 323 6616 TUE. 19 353 6646 THU. 51 ! 20 293 6586 SUN. ---- 20 324 6617 WED. 20 354 6647 FRI. 21 294 6587 MON. ---- 21 325 6618 THU. 47 ! 21 355 6648 SAM. 22 295 6588 TUE. 22 326 6619 FRI. 22 356 6649 SUN. ---- 23 296 6589 WED. 23 327 6620 SAM. 23 357 6650 MON. ---- 24 297 6590 THU. 43 ! 24 328 6621 SUN. ---- 24 358 6651 TUE. 25 298 6591 FRI. 25 329 6622 MON. ---- 25 359 6652 WED. 26 299 6592 SAM. 26 330 6623 TUE. 26 360 6653 THU. 52 ! 27 300 6593 SUN. ---- 27 331 6624 WED. 27 361 6654 FRI. 28 301 6594 MON. ---- 28 332 6625 THU. 48 ! 28 362 6655 SAM. 29 302 6595 TUE. 29 333 6626 FRI. 29 363 6656 SUN. ---- 30 303 6596 WED. 30 334 6627 SAM. 30 364 6657 MON. ---- 31 304 6597 THU. 44 ! 31 365 6658 TUE. ------------------------------ ------------------------------ ------------------------------
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