// Surveyor Tools
GPS calendar 2023: GPS week and day of year (DOY) for every date Tools › GPS week and day of year › 2023 In 2023, GPS weeks run from 2243 (January 1) to 2295 (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 2023
January
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2243 1 001 2 002 3 003 4 004 5 005 6 006 7 007 2244 8 008 9 009 10 010 11 011 12 012 13 013 14 014 2245 15 015 16 016 17 017 18 018 19 019 20 020 21 021 2246 22 022 23 023 24 024 25 025 26 026 27 027 28 028 2247 29 029 30 030 31 031
February
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2247 1 032 2 033 3 034 4 035 2248 5 036 6 037 7 038 8 039 9 040 10 041 11 042 2249 12 043 13 044 14 045 15 046 16 047 17 048 18 049 2250 19 050 20 051 21 052 22 053 23 054 24 055 25 056 2251 26 057 27 058 28 059
March
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2251 1 060 2 061 3 062 4 063 2252 5 064 6 065 7 066 8 067 9 068 10 069 11 070 2253 12 071 13 072 14 073 15 074 16 075 17 076 18 077 2254 19 078 20 079 21 080 22 081 23 082 24 083 25 084 2255 26 085 27 086 28 087 29 088 30 089 31 090
April
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2255 1 091 2256 2 092 3 093 4 094 5 095 6 096 7 097 8 098 2257 9 099 10 100 11 101 12 102 13 103 14 104 15 105 2258 16 106 17 107 18 108 19 109 20 110 21 111 22 112 2259 23 113 24 114 25 115 26 116 27 117 28 118 29 119 2260 30 120
May
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2260 1 121 2 122 3 123 4 124 5 125 6 126 2261 7 127 8 128 9 129 10 130 11 131 12 132 13 133 2262 14 134 15 135 16 136 17 137 18 138 19 139 20 140 2263 21 141 22 142 23 143 24 144 25 145 26 146 27 147 2264 28 148 29 149 30 150 31 151
June
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2264 1 152 2 153 3 154 2265 4 155 5 156 6 157 7 158 8 159 9 160 10 161 2266 11 162 12 163 13 164 14 165 15 166 16 167 17 168 2267 18 169 19 170 20 171 21 172 22 173 23 174 24 175 2268 25 176 26 177 27 178 28 179 29 180 30 181
July
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2268 1 182 2269 2 183 3 184 4 185 5 186 6 187 7 188 8 189 2270 9 190 10 191 11 192 12 193 13 194 14 195 15 196 2271 16 197 17 198 18 199 19 200 20 201 21 202 22 203 2272 23 204 24 205 25 206 26 207 27 208 28 209 29 210 2273 30 211 31 212
August
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2273 1 213 2 214 3 215 4 216 5 217 2274 6 218 7 219 8 220 9 221 10 222 11 223 12 224 2275 13 225 14 226 15 227 16 228 17 229 18 230 19 231 2276 20 232 21 233 22 234 23 235 24 236 25 237 26 238 2277 27 239 28 240 29 241 30 242 31 243
September
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2277 1 244 2 245 2278 3 246 4 247 5 248 6 249 7 250 8 251 9 252 2279 10 253 11 254 12 255 13 256 14 257 15 258 16 259 2280 17 260 18 261 19 262 20 263 21 264 22 265 23 266 2281 24 267 25 268 26 269 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
2282 1 274 2 275 3 276 4 277 5 278 6 279 7 280 2283 8 281 9 282 10 283 11 284 12 285 13 286 14 287 2284 15 288 16 289 17 290 18 291 19 292 20 293 21 294 2285 22 295 23 296 24 297 25 298 26 299 27 300 28 301 2286 29 302 30 303 31 304
November
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2286 1 305 2 306 3 307 4 308 2287 5 309 6 310 7 311 8 312 9 313 10 314 11 315 2288 12 316 13 317 14 318 15 319 16 320 17 321 18 322 2289 19 323 20 324 21 325 22 326 23 327 24 328 25 329 2290 26 330 27 331 28 332 29 333 30 334
December
GPS week Sun 0 Mon 1 Tue 2 Wed 3 Thu 4 Fri 5 Sat 6
2290 1 335 2 336 2291 3 337 4 338 5 339 6 340 7 341 8 342 9 343 2292 10 344 11 345 12 346 13 347 14 348 15 349 16 350 2293 17 351 18 352 19 353 20 354 21 355 22 356 23 357 2294 24 358 25 359 26 360 27 361 28 362 29 363 30 364 2295 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.
