Understanding > Astronomical calculations
2011.-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 5563 SAM. 1 32 5594 TUE. 1 60 5622 TUE. 2 2 5564 SUN. ---- 2 33 5595 WED. 2 61 5623 WED. 3 3 5565 MON. ---- 3 34 5596 THU. 5 ! 3 62 5624 THU. 9 ! 4 4 5566 TUE. 4 35 5597 FRI. 4 63 5625 FRI. 5 5 5567 WED. 5 36 5598 SAM. 5 64 5626 SAM. 6 6 5568 THU. 1 ! 6 37 5599 SUN. ---- 6 65 5627 SUN. ---- 7 7 5569 FRI. 7 38 5600 MON. ---- 7 66 5628 MON. ---- 8 8 5570 SAM. 8 39 5601 TUE. 8 67 5629 TUE. 9 9 5571 SUN. ---- 9 40 5602 WED. 9 68 5630 WED. 10 10 5572 MON. ---- 10 41 5603 THU. 6 ! 10 69 5631 THU. 10 ! 11 11 5573 TUE. 11 42 5604 FRI. 11 70 5632 FRI. 12 12 5574 WED. 12 43 5605 SAM. 12 71 5633 SAM. 13 13 5575 THU. 2 ! 13 44 5606 SUN. ---- 13 72 5634 SUN. ---- 14 14 5576 FRI. 14 45 5607 MON. ---- 14 73 5635 MON. ---- 15 15 5577 SAM. 15 46 5608 TUE. 15 74 5636 TUE. 16 16 5578 SUN. ---- 16 47 5609 WED. 16 75 5637 WED. 17 17 5579 MON. ---- 17 48 5610 THU. 7 ! 17 76 5638 THU. 11 ! 18 18 5580 TUE. 18 49 5611 FRI. 18 77 5639 FRI. 19 19 5581 WED. 19 50 5612 SAM. 19 78 5640 SAM. 20 20 5582 THU. 3 ! 20 51 5613 SUN. ---- 20 79 5641 SUN. ---- 21 21 5583 FRI. 21 52 5614 MON. ---- 21 80 5642 MON. ---- 22 22 5584 SAM. 22 53 5615 TUE. 22 81 5643 TUE. 23 23 5585 SUN. ---- 23 54 5616 WED. 23 82 5644 WED. 24 24 5586 MON. ---- 24 55 5617 THU. 8 ! 24 83 5645 THU. 12 ! 25 25 5587 TUE. 25 56 5618 FRI. 25 84 5646 FRI. 26 26 5588 WED. 26 57 5619 SAM. 26 85 5647 SAM. 27 27 5589 THU. 4 ! 27 58 5620 SUN. ---- 27 86 5648 SUN. ---- 28 28 5590 FRI. 28 59 5621 MON. ---- 28 87 5649 MON. ---- 29 29 5591 SAM. 29 88 5650 TUE. 30 30 5592 SUN. ---- 30 89 5651 WED. 31 31 5593 MON. ---- 31 90 5652 THU. 13 ! ------------------------------ ------------------------------ ------------------------------ 2011.-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 5653 FRI. 1 121 5683 SUN. ---- 1 152 5714 WED. 2 92 5654 SAM. 2 122 5684 MON. ---- 2 153 5715 THU. 22 ! 3 93 5655 SUN. ---- 3 123 5685 TUE. 3 154 5716 FRI. 4 94 5656 MON. ---- 4 124 5686 WED. 4 155 5717 SAM. 5 95 5657 TUE. 5 125 5687 THU. 18 ! 5 156 5718 SUN. ---- 6 96 5658 WED. 6 126 5688 FRI. 6 157 5719 MON. ---- 7 97 5659 THU. 14 ! 7 127 5689 SAM. 7 158 5720 TUE. 8 98 5660 FRI. 8 128 5690 SUN. ---- 8 159 5721 WED. 9 99 5661 SAM. 9 129 5691 MON. ---- 9 160 5722 THU. 23 ! 10 100 5662 SUN. ---- 10 130 5692 TUE. 10 161 5723 FRI. 11 101 5663 MON. ---- 11 131 5693 WED. 11 162 5724 SAM. 12 102 5664 TUE. 12 132 5694 THU. 19 ! 12 163 5725 SUN. ---- 13 103 5665 WED. 13 133 5695 FRI. 13 164 5726 MON. ---- 14 104 5666 THU. 15 ! 14 134 5696 SAM. 14 165 5727 TUE. 15 105 5667 FRI. 15 135 5697 SUN. ---- 15 166 5728 WED. 16 106 5668 SAM. 16 136 5698 MON. ---- 16 167 5729 THU. 24 ! 17 107 5669 SUN. ---- 17 137 5699 TUE. 17 168 5730 FRI. 18 108 5670 MON. ---- 18 138 5700 WED. 18 169 5731 SAM. 19 109 5671 TUE. 19 139 5701 THU. 20 ! 19 170 5732 SUN. ---- 20 110 5672 WED. 20 140 5702 FRI. 20 171 5733 MON. ---- 21 111 5673 THU. 16 ! 21 141 5703 SAM. 21 172 5734 TUE. 22 112 5674 FRI. 22 142 5704 SUN. ---- 22 173 5735 WED. 23 113 5675 SAM. 23 143 5705 MON. ---- 23 174 5736 THU. 25 ! 24 114 5676 SUN. ---- 24 144 5706 TUE. 24 175 5737 FRI. 25 115 5677 MON. ---- 25 145 5707 WED. 25 176 5738 SAM. 26 116 5678 TUE. 26 146 5708 THU. 21 ! 26 177 5739 SUN. ---- 27 117 5679 WED. 27 147 5709 FRI. 27 178 5740 MON. ---- 28 118 5680 THU. 17 ! 28 148 5710 SAM. 28 179 5741 TUE. 29 119 5681 FRI. 29 149 5711 SUN. ---- 29 180 5742 WED. 30 120 5682 SAM. 30 150 5712 MON. ---- 30 181 5743 THU. 26 ! 31 151 5713 TUE. ------------------------------ ------------------------------ ------------------------------ 2011.-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 5744 FRI. 1 213 5775 MON. ---- 1 244 5806 THU. 35 ! 2 183 5745 SAM. 2 214 5776 TUE. 2 245 5807 FRI. 3 184 5746 SUN. ---- 3 215 5777 WED. 3 246 5808 SAM. 4 185 5747 MON. ---- 4 216 5778 THU. 31 ! 4 247 5809 SUN. ---- 5 186 5748 TUE. 5 217 5779 FRI. 5 248 5810 MON. ---- 6 187 5749 WED. 6 218 5780 SAM. 6 249 5811 TUE. 7 188 5750 THU. 27 ! 7 219 5781 SUN. ---- 7 250 5812 WED. 8 189 5751 FRI. 8 220 5782 MON. ---- 8 251 5813 THU. 36 ! 9 190 5752 SAM. 9 221 5783 TUE. 9 252 5814 FRI. 10 191 5753 SUN. ---- 10 222 5784 WED. 10 253 5815 SAM. 11 192 5754 MON. ---- 11 223 5785 THU. 32 ! 11 254 5816 SUN. ---- 12 193 5755 TUE. 12 224 5786 FRI. 12 255 5817 MON. ---- 13 194 5756 WED. 13 225 5787 SAM. 13 256 5818 TUE. 14 195 5757 THU. 28 ! 14 226 5788 SUN. ---- 14 257 5819 WED. 15 196 5758 FRI. 15 227 5789 MON. ---- 15 258 5820 THU. 37 ! 16 197 5759 SAM. 16 228 5790 TUE. 16 259 5821 FRI. 17 198 5760 SUN. ---- 17 229 5791 WED. 17 260 5822 SAM. 18 199 5761 MON. ---- 18 230 5792 THU. 33 ! 18 261 5823 SUN. ---- 19 200 5762 TUE. 19 231 5793 FRI. 19 262 5824 MON. ---- 20 201 5763 WED. 20 232 5794 SAM. 20 263 5825 TUE. 21 202 5764 THU. 29 ! 21 233 5795 SUN. ---- 21 264 5826 WED. 22 203 5765 FRI. 22 234 5796 MON. ---- 22 265 5827 THU. 38 ! 23 204 5766 SAM. 23 235 5797 TUE. 23 266 5828 FRI. 24 205 5767 SUN. ---- 24 236 5798 WED. 24 267 5829 SAM. 25 206 5768 MON. ---- 25 237 5799 THU. 34 ! 25 268 5830 SUN. ---- 26 207 5769 TUE. 26 238 5800 FRI. 26 269 5831 MON. ---- 27 208 5770 WED. 27 239 5801 SAM. 27 270 5832 TUE. 28 209 5771 THU. 30 ! 28 240 5802 SUN. ---- 28 271 5833 WED. 29 210 5772 FRI. 29 241 5803 MON. ---- 29 272 5834 THU. 39 ! 30 211 5773 SAM. 30 242 5804 TUE. 30 273 5835 FRI. 31 212 5774 SUN. ---- 31 243 5805 WED. ------------------------------ ------------------------------ ------------------------------ 2011.-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 5836 SAM. 1 305 5867 TUE. 1 335 5897 THU. 48 ! 2 275 5837 SUN. ---- 2 306 5868 WED. 2 336 5898 FRI. 3 276 5838 MON. ---- 3 307 5869 THU. 44 ! 3 337 5899 SAM. 4 277 5839 TUE. 4 308 5870 FRI. 4 338 5900 SUN. ---- 5 278 5840 WED. 5 309 5871 SAM. 5 339 5901 MON. ---- 6 279 5841 THU. 40 ! 6 310 5872 SUN. ---- 6 340 5902 TUE. 7 280 5842 FRI. 7 311 5873 MON. ---- 7 341 5903 WED. 8 281 5843 SAM. 8 312 5874 TUE. 8 342 5904 THU. 49 ! 9 282 5844 SUN. ---- 9 313 5875 WED. 9 343 5905 FRI. 10 283 5845 MON. ---- 10 314 5876 THU. 45 ! 10 344 5906 SAM. 11 284 5846 TUE. 11 315 5877 FRI. 11 345 5907 SUN. ---- 12 285 5847 WED. 12 316 5878 SAM. 12 346 5908 MON. ---- 13 286 5848 THU. 41 ! 13 317 5879 SUN. ---- 13 347 5909 TUE. 14 287 5849 FRI. 14 318 5880 MON. ---- 14 348 5910 WED. 15 288 5850 SAM. 15 319 5881 TUE. 15 349 5911 THU. 50 ! 16 289 5851 SUN. ---- 16 320 5882 WED. 16 350 5912 FRI. 17 290 5852 MON. ---- 17 321 5883 THU. 46 ! 17 351 5913 SAM. 18 291 5853 TUE. 18 322 5884 FRI. 18 352 5914 SUN. ---- 19 292 5854 WED. 19 323 5885 SAM. 19 353 5915 MON. ---- 20 293 5855 THU. 42 ! 20 324 5886 SUN. ---- 20 354 5916 TUE. 21 294 5856 FRI. 21 325 5887 MON. ---- 21 355 5917 WED. 22 295 5857 SAM. 22 326 5888 TUE. 22 356 5918 THU. 51 ! 23 296 5858 SUN. ---- 23 327 5889 WED. 23 357 5919 FRI. 24 297 5859 MON. ---- 24 328 5890 THU. 47 ! 24 358 5920 SAM. 25 298 5860 TUE. 25 329 5891 FRI. 25 359 5921 SUN. ---- 26 299 5861 WED. 26 330 5892 SAM. 26 360 5922 MON. ---- 27 300 5862 THU. 43 ! 27 331 5893 SUN. ---- 27 361 5923 TUE. 28 301 5863 FRI. 28 332 5894 MON. ---- 28 362 5924 WED. 29 302 5864 SAM. 29 333 5895 TUE. 29 363 5925 THU. 52 ! 30 303 5865 SUN. ---- 30 334 5896 WED. 30 364 5926 FRI. 31 304 5866 MON. ---- 31 365 5927 SAM. ------------------------------ ------------------------------ ------------------------------