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3 | <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> |
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5 | <title>date2jul.pro (SAXO Documentation Assistant)</title> |
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45 | <table border="0" cellpadding="0" cellspacing="0" width="98%" bgcolor="#F0F0FF" valign="bottom"> |
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46 | <tr> |
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47 | <td width="10%"> |
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48 | <a href="caldat.html"><img src="./../prev.gif" border="0" alt="Previous"></a></td> |
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49 | <td width="80%" align="center" valign="center"> |
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50 | <font size=-1><i>SAXO Documentation Assistant</i>: <a href="./../home.html">Overview</a></font></td> |
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51 | <td width="10%" align="right"> |
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52 | <a href="date2string.html"><img src="./../next.gif" border="0" alt="Next"></a></td> |
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53 | </tr> |
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54 | </table> |
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55 | |
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56 | |
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57 | <h1><font size="-2">Calendar/</font></h1> |
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58 | <h2>date2jul.pro</h2> |
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59 | |
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60 | <dl> |
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61 | </dl> |
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62 | |
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63 | |
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64 | gives Julian day equivalent of a date given in yyyymmdd format |
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65 | This is the inverse of the function <a href="..//Calendar/jul2date.html">jul2date</a>. |
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66 | |
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67 | |
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68 | |
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69 | |
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70 | |
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71 | <a name="#_date2jul"></a> |
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72 | |
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73 | <h2>date2jul <font size="-1" color="#006633"> |
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74 | Calendar |
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75 | </font></h2> |
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76 | |
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77 | <p><font face="Courier"><i>result = </i>date2jul(<i><a href="#_date2jul_keyword_date">date</a></i>, <a href="#_date2jul_keyword_GRADS">GRADS</a>=<i>GRADS</i>, <a href="#_date2jul_keyword_MONTH">MONTH</a>=<i>MONTH</i>, <a href="#_date2jul_keyword_DAY">DAY</a>=<i>DAY</i>, <a href="#_date2jul_keyword_YEAR">YEAR</a>=<i>YEAR</i>, <a href="#_date2jul_keyword_HOUR">HOUR</a>=<i>HOUR</i>, <a href="#_date2jul_keyword_MINUTE">MINUTE</a>=<i>MINUTE</i>, <a href="#_date2jul_keyword_SECOND">SECOND</a>=<i>SECOND</i>)</font></p> |
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78 | |
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79 | |
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80 | |
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81 | |
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82 | <h3>Return value</h3> |
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83 | Julian day with the same format (long or double) as the input parameter |
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84 | |
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85 | |
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86 | |
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87 | <h3>Parameters</h3> |
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88 | |
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89 | |
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90 | <a name="#_date2jul_keyword_date"></a> |
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91 | <h4>date |
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92 | <font size="-1" color="#006633">in</font> |
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93 | |
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94 | |
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95 | <font size="-1" color="#006633">required</font> |
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96 | |
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97 | <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i>long or double, scalar or array</i></font> |
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98 | |
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99 | |
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100 | </h4> |
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101 | |
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102 | |
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103 | longword integer with yyyymmdd format or double-precision |
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104 | floating-point with yyyymmdd.xx where xx is the fraction of the day |
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105 | (xx=0 at 0am and 5 at 12am) |
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106 | |
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107 | |
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108 | |
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109 | |
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110 | |
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111 | <h3>Keywords</h3> |
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112 | |
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113 | |
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114 | <a name="#_date2jul_keyword_GRADS"></a> |
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115 | <h4>GRADS |
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116 | |
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117 | |
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118 | |
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119 | |
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120 | |
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121 | |
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122 | |
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123 | |
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124 | </h4> |
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125 | |
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126 | |
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127 | if 1 <= year <= 49 --> year = 2000 + year |
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128 | if 50 <= year <= 99 --> year = 1900 + year |
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129 | |
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130 | |
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131 | <a name="#_date2jul_keyword_MONTH"></a> |
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132 | <h4>MONTH |
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133 | |
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134 | |
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135 | |
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136 | |
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137 | |
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138 | |
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139 | |
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140 | |
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141 | </h4> |
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142 | |
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143 | |
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144 | Set this keyword equal to a named variable that will receive a |
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145 | longword integer or longword integer array representing the number of |
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146 | the desired month (1 = January, ..., 12 = December). |
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147 | |
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148 | |
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149 | <a name="#_date2jul_keyword_DAY"></a> |
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150 | <h4>DAY |
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151 | |
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152 | |
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153 | |
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154 | |
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155 | |
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156 | |
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157 | |
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158 | |
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159 | </h4> |
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160 | |
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161 | |
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162 | Set this keyword equal to a named variable that will receive a |
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163 | longword integer or longword integer array representing the number of |
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164 | the day of the month (1-31). |
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165 | |
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166 | |
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167 | <a name="#_date2jul_keyword_YEAR"></a> |
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168 | <h4>YEAR |
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169 | |
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170 | |
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171 | |
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172 | |
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173 | |
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174 | |
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175 | |
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176 | |
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177 | </h4> |
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178 | |
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179 | |
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180 | Set this keyword equal to a named variable that will receive a |
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181 | longword integer or longword integer array representing the number of |
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182 | the desired year (e.g., 1994). |
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183 | |
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184 | |
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185 | <a name="#_date2jul_keyword_HOUR"></a> |
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186 | <h4>HOUR |
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187 | |
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188 | |
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189 | |
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190 | |
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191 | |
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192 | |
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193 | |
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194 | |
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195 | </h4> |
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196 | |
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197 | |
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198 | Set this keyword equal to a named variable that will receive a |
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199 | longword integer or longword integer array representing the number of |
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200 | the hour of the day (0-23). |
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201 | |
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202 | |
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203 | <a name="#_date2jul_keyword_MINUTE"></a> |
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204 | <h4>MINUTE |
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205 | |
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206 | |
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207 | |
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208 | |
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209 | |
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210 | |
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211 | |
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212 | |
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213 | </h4> |
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214 | |
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215 | |
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216 | Set this keyword equal to a named variable that will receive a |
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217 | longword integer or longword integer array representing the number of |
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218 | the minute of the hour (0-59). |
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219 | |
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220 | |
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221 | <a name="#_date2jul_keyword_SECOND"></a> |
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222 | <h4>SECOND |
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223 | |
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224 | |
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225 | |
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226 | |
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227 | |
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228 | |
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229 | |
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230 | |
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231 | </h4> |
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232 | |
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233 | |
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234 | Set this keyword equal to a named variable that will receive a |
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235 | double-precision floating-point value or a double-precision |
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236 | floating-point array representing the number of the second of the |
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237 | minute (0-59). |
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238 | |
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239 | |
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240 | |
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241 | |
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242 | <h3>Examples</h3><pre> |
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243 | |
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244 | IDL> jday = juldate(19930124) |
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245 | IDL> print, date2jul(19931205) EQ julday(12,5,1993) |
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246 | 1 |
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247 | IDL> print, date2jul(931205,/grads) EQ julday(12,5,1993) |
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248 | 1 |
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249 | IDL> print, date2jul(19931205.5d) EQ julday(12,5,1993,12,0,0) |
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250 | 1 |
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251 | IDL> print, date2jul(19931205.0d) EQ julday(12,5,1993,0,0,0) |
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252 | 1 |
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253 | |
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254 | </pre><h3>Version history</h3> |
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255 | |
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256 | <h4>Version</h4> |
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257 | $Id: date2jul.pro 329 2007-12-20 17:12:44Z smasson $ |
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258 | |
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259 | <h4>History</h4> |
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260 | Sebastien Masson (smasson@lodyc.jussieu.fr) June 2005 |
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261 | |
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262 | |
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263 | |
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264 | <h3>Known issues</h3> |
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265 | |
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266 | |
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267 | |
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268 | <h4>Restrictions</h4> |
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269 | Input param must be longword integer or double-precision floating-point |
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270 | |
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279 | |
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280 | <font size="-3"><p> </p></font> |
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281 | <hr size="1" color="#CCCCCC"/> |
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282 | |
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283 | |
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284 | |
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285 | |
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286 | <p><font color="gray" size="-3"> Produced by IDLdoc 2.0.</font></p> |
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287 | |
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288 | </body> |
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289 | </html> |
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