The Nautical Almanac 2021

1 The Nautical Almanac 2021. The Nautical Almanac Table of Contents Part Page Acknowledgement, Credits and Disclaimer 3. Calendar, yearly 4. Day of Week & Day Number of Year 5. Links Time signals Bowditch Terrestrial Almanac 6. Pub. No. 249 Pub. No. 229 Sight Reduction Forms and Methods Formulas 7-9. Explanation of The Nautical Almanac pages 10-14. Equation of Time curve 15. Moon Phases (includes Moon in graphic form) 16-17. Note! The Daily Page numbers are found at the bottom of each page January 2. February 22. March 42. April 62. May 82. June 102. July 122. August 144. September 164. October 184. November 204. December 224. Note! Increments and Altitude Corrections are found on the pdf page numbers below Tables of Increments and Corrections for Sun, planets, Aries, Moon ( the yellow pages ) 262.

2 Conversion of Arc to Time 282. Altitude Corrections for Sun, Planets, Stars (includes Refraction and Dip) 283-284. Altitude Corrections for the Moon 285-286. Navigational Star Chart 287. fair winds, clear skies & following seas Copyright 2021 You are free to copy and distribute this document in its entirety freely ye received, freely give April 2, 2021. Acknowledgment and Credits Dr. Enno Rodegerdts The Nautical Almanac Daily Pages and Sun Almanacs found on our site were originally created from PyAlmanac written by the great Norwegian sailor Enno Rodegerdts. PyAlmanac used PyEphem to generate the almanacs and LaTex provided the final formatting. Visit Dr. Rodegerdts site and learn of his voyages at Without his work wouldn't exist. Andrew Bauer Mr.

3 Bauer has taken the initial work of Dr. Rodegerdts and improved it to the excellence found in the following Daily Pages. Attending foremost to the accuracy of data and then formatting Mr. Bauer created SkyAlmanac which draws from Brandon Rhodes work Ephem and Skyfield and provides a clear arrangement of figures required for celestial navigation. To that end his work was determined, tireless and efficient. In our mutual writing across many lines of longitude he has always been pleasant, friendly and most affable. As he has said, "The art of celestial navigation should be promoted, not discouraged, even in the modern day". To both of these men we all owe a large debt of gratitude and thanks Disclaimer and Warning Prior to use verify the accuracy of The Nautical Almanac or data you download from our site.

4 They SHOULD NOT and MUST NOT be relied upon for celestial navigation work of any sorts or any purpose whatsoever. You use them at your own risk or peril. Errors & Corrections Contact us if you find any significant errors and describe the correction that should be made. Copyright 2021 You are free to copy and distribute this document in its entirety but never sell it. freely ye received, freely give 2021. January February March M Tu W Th F Sa Su M Tu W Th F Sa Su M Tu W Th F Sa Su 1 2 3 1 2 3 4 5 6 7 1 2 3 4 5 6 7. 4 5 6 7 8 9 10 8 9 10 11 12 13 14 8 9 10 11 12 13 14. 11 12 13 14 15 16 17 15 16 17 18 19 20 21 15 16 17 18 19 20 21. 18 19 20 21 22 23 24 22 23 24 25 26 27 28 22 23 24 25 26 27 28. 25 26 27 28 29 30 31 29 30 31. April May June M Tu W Th F Sa Su M Tu W Th F Sa Su M Tu W Th F Sa Su 1 2 3 4 1 2 1 2 3 4 5 6.

5 5 6 7 8 9 10 11 3 4 5 6 7 8 9 7 8 9 10 11 12 13. 12 13 14 15 16 17 18 10 11 12 13 14 15 16 14 15 16 17 18 19 20. 19 20 21 22 23 24 25 17 18 19 20 21 22 23 21 22 23 24 25 26 27. 26 27 28 29 30 24 25 26 27 28 29 30 28 29 30. 31. July August September M Tu W Th F Sa Su M Tu W Th F Sa Su M Tu W Th F Sa Su 1 2 3 4 1 1 2 3 4 5. 5 6 7 8 9 10 11 2 3 4 5 6 7 8 6 7 8 9 10 11 12. 12 13 14 15 16 17 18 9 10 11 12 13 14 15 13 14 15 16 17 18 19. 19 20 21 22 23 24 25 16 17 18 19 20 21 22 20 21 22 23 24 25 26. 26 27 28 29 30 31 23 24 25 26 27 28 29 27 28 29 30. 30 31. October November December M Tu W Th F Sa Su M Tu W Th F Sa Su M Tu W Th F Sa Su 1 2 3 1 2 3 4 5 6 7 1 2 3 4 5. 4 5 6 7 8 9 10 8 9 10 11 12 13 14 6 7 8 9 10 11 12. 11 12 13 14 15 16 17 15 16 17 18 19 20 21 13 14 15 16 17 18 19.

6 18 19 20 21 22 23 24 22 23 24 25 26 27 28 20 21 22 23 24 25 26. 25 26 27 28 29 30 31 29 30 27 28 29 30 31. 2021. Day of Week, Week Number, Day of Year, Remaining Days of Year Days remaining Days remaining Days remaining Days remaining Days remaining Days remaining 1 2 3 4 5 6. Week number Week number Week number Week number Week number Week number Day of Month Day of Month Day of Month Day of Month Day of Month Day of Month January February March April May June Day Day Day Day Day Day Day Day Day Day Day Day of of of of of of of of of of of of Week Year Week Year Week Year Week Year Week Year Week Year 1 Fri 1 364 1 Mon 32 333 5 1 Mon 60 305 9 1 Thu 91 274 13 1 Sat 121 244 17 1 Tue 152 213 22. 2 Sat 2 363 2 Tue 33 332 2 Tue 61 304 2 Fri 92 273 2 Sun 122 243 18 2 Wed 153 212.

7 3 Sun 3 362 1 3 Wed 34 331 3 Wed 62 303 3 Sat 93 272 3 Mon 123 242 3 Thu 154 211. 4 Mon 4 361 4 Thu 35 330 4 Thu 63 302 4 Sun 94 271 14 4 Tue 124 241 4 Fri 155 210. 5 Tue 5 360 5 Fri 36 329 5 Fri 64 301 5 Mon 95 270 5 Wed 125 240 5 Sat 156 209. 6 Wed 6 359 6 Sat 37 328 6 Sat 65 300 6 Tue 96 269 6 Thu 126 239 6 Sun 157 208 23. 7 Thu 7 358 7 Sun 38 327 6 7 Sun 66 299 10 7 Wed 97 268 7 Fri 127 238 7 Mon 158 207. 8 Fri 8 357 8 Mon 39 326 8 Mon 67 298 8 Thu 98 267 8 Sat 128 237 8 Tue 159 206. 9 Sat 9 356 9 Tue 40 325 9 Tue 68 297 9 Fri 99 266 9 Sun 129 236 19 9 Wed 160 205. 10 Sun 10 355 2 10 Wed 41 324 10 Wed 69 296 10 Sat 100 265 10 Mon 130 235 10 Thu 161 204. 11 Mon 11 354 11 Thu 42 323 11 Thu 70 295 11 Sun 101 264 15 11 Tue 131 234 11 Fri 162 203.

8 12 Tue 12 353 12 Fri 43 322 12 Fri 71 294 12 Mon 102 263 12 Wed 132 233 12 Sat 163 202. 13 Wed 13 352 13 Sat 44 321 13 Sat 72 293 13 Tue 103 262 13 Thu 133 232 13 Sun 164 201 24. 14 Thu 14 351 14 Sun 45 320 7 14 Sun 73 292 11 14 Wed 104 261 14 Fri 134 231 14 Mon 165 200. 15 Fri 15 350 15 Mon 46 319 15 Mon 74 291 15 Thu 105 260 15 Sat 135 230 15 Tue 166 199. 16 Sat 16 349 16 Tue 47 318 16 Tue 75 290 16 Fri 106 259 16 Sun 136 229 20 16 Wed 167 198. 17 Sun 17 348 3 17 Wed 48 317 17 Wed 76 289 17 Sat 107 258 17 Mon 137 228 17 Thu 168 197. 18 Mon 18 347 18 Thu 49 316 18 Thu 77 288 18 Sun 108 257 16 18 Tue 138 227 18 Fri 169 196. 19 Tue 19 346 19 Fri 50 315 19 Fri 78 287 19 Mon 109 256 19 Wed 139 226 19 Sat 170 195. 20 Wed 20 345 20 Sat 51 314 20 Sat 79 286 20 Tue 110 255 20 Thu 140 225 20 Sun 171 194 25.

9 21 Thu 21 344 21 Sun 52 313 8 21 Sun 80 285 12 21 Wed 111 254 21 Fri 141 224 21 Mon 172 193. 22 Fri 22 343 22 Mon 53 312 22 Mon 81 284 22 Thu 112 253 22 Sat 142 223 22 Tue 173 192. 23 Sat 23 342 23 Tue 54 311 23 Tue 82 283 23 Fri 113 252 23 Sun 143 222 21 23 Wed 174 191. 24 Sun 24 341 4 24 Wed 55 310 24 Wed 83 282 24 Sat 114 251 24 Mon 144 221 24 Thu 175 190. 25 Mon 25 340 25 Thu 56 309 25 Thu 84 281 25 Sun 115 250 17 25 Tue 145 220 25 Fri 176 189. 26 Tue 26 339 26 Fri 57 308 26 Fri 85 280 26 Mon 116 249 26 Wed 146 219 26 Sat 177 188. 27 Wed 27 338 27 Sat 58 307 27 Sat 86 279 27 Tue 117 248 27 Thu 147 218 27 Sun 178 187 26. 28 Thu 28 337 28 Sun 59 306 9 28 Sun 87 278 13 28 Wed 118 247 28 Fri 148 217 28 Mon 179 186. 29 Fri 29 336 29 Mon 88 277 29 Thu 119 246 29 Sat 149 216 29 Tue 180 185.

10 30 Sat 30 335 30 Tue 89 276 30 Fri 120 245 30 Sun 150 215 22 30 Wed 181 184. 31 Sun 31 334 5 31 Wed 90 275 31 Mon 151 214. Day of Week, Week Number, Day of Year, Remaining Days of Year Days remaining Days remaining Days remaining Days remaining Days remaining Days remaining 7 8 9 10 11 12. Week number Week number Week number Week number Week number Week number Day of Month Day of Month Day of Month Day of Month Day of Month Day of Month July August September October November December Day Day Day Day Day Day Day Day Day Day Day Day of of of of of of of of of of of of Week Year Week Year Week Year Week Year Week Year Week Year 1 Thu 182 183 26 1 Sun 213 152 31 1 Wed 244 121 35 1 Fri 274 91 39 1 Mon 305 60 44 1 Wed 335 30 48. 2 Fri 183 182 2 Mon 214 151 2 Thu 245 120 2 Sat 275 90 2 Tue 306 59 2 Thu 336 29.