// Surveyor Tools
GPS calendar 2026: GPS week and day of year (DOY) for every date Tools › GPS week and day of year › 2026 In 2026, GPS weeks run from 2399 (January 1) to 2451 (December 31), and the year has 365 days. Under each date, the small number is the day of year (DOY) used in RINEX file names.
GPS calendar 2026
January
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2399 1 001 2 002 3 003 2400 4 004 5 005 6 006 7 007 8 008 9 009 10 010 2401 11 011 12 012 13 013 14 014 15 015 16 016 17 017 2402 18 018 19 019 20 020 21 021 22 022 23 023 24 024 2403 25 025 26 026 27 027 28 028 29 029 30 030 31 031
February
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2404 1 032 2 033 3 034 4 035 5 036 6 037 7 038 2405 8 039 9 040 10 041 11 042 12 043 13 044 14 045 2406 15 046 16 047 17 048 18 049 19 050 20 051 21 052 2407 22 053 23 054 24 055 25 056 26 057 27 058 28 059
March
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2408 1 060 2 061 3 062 4 063 5 064 6 065 7 066 2409 8 067 9 068 10 069 11 070 12 071 13 072 14 073 2410 15 074 16 075 17 076 18 077 19 078 20 079 21 080 2411 22 081 23 082 24 083 25 084 26 085 27 086 28 087 2412 29 088 30 089 31 090
April
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2412 1 091 2 092 3 093 4 094 2413 5 095 6 096 7 097 8 098 9 099 10 100 11 101 2414 12 102 13 103 14 104 15 105 16 106 17 107 18 108 2415 19 109 20 110 21 111 22 112 23 113 24 114 25 115 2416 26 116 27 117 28 118 29 119 30 120
May
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2416 1 121 2 122 2417 3 123 4 124 5 125 6 126 7 127 8 128 9 129 2418 10 130 11 131 12 132 13 133 14 134 15 135 16 136 2419 17 137 18 138 19 139 20 140 21 141 22 142 23 143 2420 24 144 25 145 26 146 27 147 28 148 29 149 30 150 2421 31 151
June
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2421 1 152 2 153 3 154 4 155 5 156 6 157 2422 7 158 8 159 9 160 10 161 11 162 12 163 13 164 2423 14 165 15 166 16 167 17 168 18 169 19 170 20 171 2424 21 172 22 173 23 174 24 175 25 176 26 177 27 178 2425 28 179 29 180 30 181
July
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2425 1 182 2 183 3 184 4 185 2426 5 186 6 187 7 188 8 189 9 190 10 191 11 192 2427 12 193 13 194 14 195 15 196 16 197 17 198 18 199 2428 19 200 20 201 21 202 22 203 23 204 24 205 25 206 2429 26 207 27 208 28 209 29 210 30 211 31 212
August
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2429 1 213 2430 2 214 3 215 4 216 5 217 6 218 7 219 8 220 2431 9 221 10 222 11 223 12 224 13 225 14 226 15 227 2432 16 228 17 229 18 230 19 231 20 232 21 233 22 234 2433 23 235 24 236 25 237 26 238 27 239 28 240 29 241 2434 30 242 31 243
September
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2434 1 244 2 245 3 246 4 247 5 248 2435 6 249 7 250 8 251 9 252 10 253 11 254 12 255 2436 13 256 14 257 15 258 16 259 17 260 18 261 19 262 2437 20 263 21 264 22 265 23 266 24 267 25 268 26 269 2438 27 270 28 271 29 272 30 273
October
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2438 1 274 2 275 3 276 2439 4 277 5 278 6 279 7 280 8 281 9 282 10 283 2440 11 284 12 285 13 286 14 287 15 288 16 289 17 290 2441 18 291 19 292 20 293 21 294 22 295 23 296 24 297 2442 25 298 26 299 27 300 28 301 29 302 30 303 31 304
November
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2443 1 305 2 306 3 307 4 308 5 309 6 310 7 311 2444 8 312 9 313 10 314 11 315 12 316 13 317 14 318 2445 15 319 16 320 17 321 18 322 19 323 20 324 21 325 2446 22 326 23 327 24 328 25 329 26 330 27 331 28 332 2447 29 333 30 334
December
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2447 1 335 2 336 3 337 4 338 5 339 2448 6 340 7 341 8 342 9 343 10 344 11 345 12 346 2449 13 347 14 348 15 349 16 350 17 351 18 352 19 353 2450 20 354 21 355 22 356 23 357 24 358 25 359 26 360 2451 27 361 28 362 29 363 30 364 31 365
FAQ
When does the GPS week start? The GPS week starts on Sunday at 00:00 GPS time and is counted from January 6, 1980 (week 0). GPS time is currently 18 seconds ahead of UTC.
What is the day of year (DOY)? It is the day number counted from January 1 (001) to December 31 (365, or 366 in a leap year). It appears in RINEX file names and in the folders of GNSS data servers.
What is today's GPS week? Open the GPS week and day-of-year calculator: it shows the GPS week, the day of year and a live GPS clock, and converts any date.
