1 | MODULE daymod |
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2 | !!====================================================================== |
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3 | !! *** MODULE daymod *** |
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4 | !! Ocean : management of the model calendar |
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5 | !!===================================================================== |
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6 | !! History : OPA ! 1994-09 (M. Pontaud M. Imbard) Original code |
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7 | !! ! 1997-03 (O. Marti) |
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8 | !! ! 1997-05 (G. Madec) |
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9 | !! ! 1997-08 (M. Imbard) |
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10 | !! NEMO 1.0 ! 2003-09 (G. Madec) F90 + nyear, nmonth, nday |
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11 | !! ! 2004-01 (A.M. Treguier) new calculation based on adatrj |
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12 | !! ! 2006-08 (G. Madec) surface module major update |
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13 | !! ! 2015-11 (D. Lea) Allow non-zero initial time of day |
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14 | !!---------------------------------------------------------------------- |
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15 | |
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16 | !!---------------------------------------------------------------------- |
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17 | !! day : calendar |
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18 | !!---------------------------------------------------------------------- |
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19 | !! ----------- WARNING ----------- |
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20 | !! ------------------------------- |
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21 | !! sbcmod assume that the time step is dividing the number of second of |
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22 | !! in a day, i.e. ===> MOD( rday, rdt ) == 0 |
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23 | !! except when user defined forcing is used (see sbcmod.F90) |
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24 | !!---------------------------------------------------------------------- |
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25 | USE dom_oce ! ocean space and time domain |
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26 | USE phycst ! physical constants |
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27 | USE ioipsl , ONLY : ymds2ju ! for calendar |
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28 | ! |
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29 | USE in_out_manager ! I/O manager |
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30 | USE iom ! |
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31 | |
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32 | IMPLICIT NONE |
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33 | PRIVATE |
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34 | |
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35 | PUBLIC day ! called by step.F90 |
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36 | PUBLIC day_mth ! Needed by TAM |
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37 | |
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38 | INTEGER, PUBLIC :: nsecd, nsecd05, ndt, ndt05 !: (PUBLIC for TAM) |
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39 | |
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40 | !!---------------------------------------------------------------------- |
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41 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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42 | !! $Id: daymod.F90 10068 2018-08-28 14:09:04Z nicolasmartin $ |
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43 | !! Software governed by the CeCILL license (see ./LICENSE) |
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44 | !!---------------------------------------------------------------------- |
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45 | CONTAINS |
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46 | |
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47 | SUBROUTINE day_mth |
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48 | !!---------------------------------------------------------------------- |
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49 | !! *** ROUTINE day_init *** |
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50 | !! |
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51 | !! ** Purpose : calendar values related to the months |
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52 | !! |
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53 | !! ** Action : - nmonth_len : length in days of the months of the current year |
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54 | !! - nyear_len : length in days of the previous/current year |
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55 | !! - nmonth_half : second since the beginning of the year and the halft of the months |
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56 | !! - nmonth_end : second since the beginning of the year and the end of the months |
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57 | !!---------------------------------------------------------------------- |
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58 | INTEGER :: jm ! dummy loop indice |
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59 | !!---------------------------------------------------------------------- |
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60 | |
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61 | ! length of the month of the current year (from nleapy, read in namelist) |
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62 | IF ( nleapy < 2 ) THEN |
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63 | nmonth_len(:) = (/ 31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 31 /) |
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64 | nyear_len(:) = 365 |
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65 | IF ( nleapy == 1 ) THEN ! we are using calandar with leap years |
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66 | IF ( MOD(nyear-1, 4) == 0 .AND. ( MOD(nyear-1, 400) == 0 .OR. MOD(nyear-1, 100) /= 0 ) ) THEN |
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67 | nyear_len(0) = 366 |
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68 | ENDIF |
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69 | IF ( MOD(nyear , 4) == 0 .AND. ( MOD(nyear , 400) == 0 .OR. MOD(nyear , 100) /= 0 ) ) THEN |
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70 | nmonth_len(2) = 29 |
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71 | nyear_len(1) = 366 |
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72 | ENDIF |
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73 | IF ( MOD(nyear+1, 4) == 0 .AND. ( MOD(nyear+1, 400) == 0 .OR. MOD(nyear+1, 100) /= 0 ) ) THEN |
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74 | nyear_len(2) = 366 |
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75 | ENDIF |
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76 | ENDIF |
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77 | ELSE |
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78 | nmonth_len(:) = nleapy ! all months with nleapy days per year |
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79 | nyear_len(:) = 12 * nleapy |
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80 | ENDIF |
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81 | |
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82 | ! half month in second since the begining of the year: |
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83 | ! time since Jan 1st 0 1 2 ... 11 12 13 |
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84 | ! ---------*--|--*--|--*--| ... |--*--|--*--|--*--|-------------------------------------- |
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85 | ! <---> <---> <---> ... <---> <---> <---> |
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86 | ! month number 0 1 2 ... 11 12 13 |
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87 | ! |
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88 | ! nmonth_half(jm) = rday * REAL( 0.5 * nmonth_len(jm) + SUM(nmonth_len(1:jm-1)) ) |
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89 | nmonth_half(0) = - nsecd05 * nmonth_len(0) |
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90 | DO jm = 1, 13 |
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91 | nmonth_half(jm) = nmonth_half(jm-1) + nsecd05 * ( nmonth_len(jm-1) + nmonth_len(jm) ) |
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92 | END DO |
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93 | |
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94 | nmonth_end(0) = 0 |
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95 | DO jm = 1, 13 |
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96 | nmonth_end(jm) = nmonth_end(jm-1) + nsecd * nmonth_len(jm) |
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97 | END DO |
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98 | ! |
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99 | END SUBROUTINE |
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100 | |
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101 | |
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102 | SUBROUTINE day( kt ) |
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103 | !!---------------------------------------------------------------------- |
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104 | !! *** ROUTINE day *** |
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105 | !! |
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106 | !! ** Purpose : Compute the date with a day iteration IF necessary. |
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107 | !! |
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108 | !! ** Method : - ??? |
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109 | !! |
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110 | !! ** Action : - nyear : current year |
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111 | !! - nmonth : current month of the year nyear |
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112 | !! - nday : current day of the month nmonth |
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113 | !! - nday_year : current day of the year nyear |
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114 | !! - ndastp : = nyear*10000 + nmonth*100 + nday |
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115 | !! - adatrj : date in days since the beginning of the run |
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116 | !! - nsec_year : current time of the year (in second since 00h, jan 1st) |
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117 | !!---------------------------------------------------------------------- |
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118 | INTEGER, INTENT(in) :: kt ! ocean time-step indices |
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119 | ! |
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120 | CHARACTER (len=25) :: charout |
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121 | REAL(wp) :: zprec ! fraction of day corresponding to 0.1 second |
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122 | !!---------------------------------------------------------------------- |
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123 | ! |
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124 | zprec = 0.1 / rday |
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125 | ! ! New time-step |
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126 | nsec_year = nsec_year + ndt |
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127 | nsec_month = nsec_month + ndt |
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128 | nsec_week = nsec_week + ndt |
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129 | nsec_day = nsec_day + ndt |
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130 | adatrj = adatrj + rdt / rday |
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131 | fjulday = fjulday + rdt / rday |
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132 | IF( ABS(fjulday - REAL(NINT(fjulday),wp)) < zprec ) fjulday = REAL(NINT(fjulday),wp) ! avoid truncation error |
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133 | IF( ABS(adatrj - REAL(NINT(adatrj ),wp)) < zprec ) adatrj = REAL(NINT(adatrj ),wp) ! avoid truncation error |
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134 | |
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135 | IF( nsec_day > nsecd ) THEN ! New day |
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136 | ! |
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137 | nday = nday + 1 |
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138 | nday_year = nday_year + 1 |
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139 | nsec_day = ndt05 |
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140 | ! |
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141 | IF( nday == nmonth_len(nmonth) + 1 ) THEN ! New month |
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142 | nday = 1 |
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143 | nmonth = nmonth + 1 |
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144 | nsec_month = ndt05 |
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145 | IF( nmonth == 13 ) THEN ! New year |
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146 | nyear = nyear + 1 |
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147 | nmonth = 1 |
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148 | nday_year = 1 |
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149 | nsec_year = ndt05 |
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150 | nsec1jan000 = nsec1jan000 + nsecd * nyear_len(1) |
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151 | IF( nleapy == 1 ) CALL day_mth |
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152 | ENDIF |
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153 | ENDIF |
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154 | ! |
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155 | ndastp = nyear * 10000 + nmonth * 100 + nday ! New date |
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156 | ! |
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157 | !compute first day of the year in julian days |
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158 | CALL ymds2ju( nyear, 01, 01, 0.0, fjulstartyear ) |
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159 | ! |
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160 | IF(lwp) WRITE(numout,'(a,i8,a,i4.4,a,i2.2,a,i2.2,a,i3.3)') '======>> time-step =', kt, & |
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161 | & ' New day, DATE Y/M/D = ', nyear, '/', nmonth, '/', nday, ' nday_year = ', nday_year |
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162 | IF(lwp) WRITE(numout,'(a,i8,a,i7,a,i5)') ' nsec_year = ', nsec_year, & |
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163 | & ' nsec_month = ', nsec_month, ' nsec_day = ', nsec_day, ' nsec_week = ', nsec_week |
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164 | ENDIF |
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165 | |
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166 | IF( nsec_week > 7*nsecd ) nsec_week = ndt05 ! New week |
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167 | ! |
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168 | END SUBROUTINE day |
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169 | |
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170 | !!====================================================================== |
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171 | END MODULE daymod |
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