Federal Agency
  on Technical Regulating
  and Metrology

  FSUE "VNIIFTRI"



                                 B U L L E T I N E    A - 2597

                                           13 October 2025


            UNIVERSAL TIME AND TERRESTRIAL POLE MOTION


    Data         MJD      UT1(SU)-UTC    X(SU)      Y(SU)
    (0h UT)                   (s)         (")        (")

                       W E E K L Y    V A L U E S
  YEAR  2025
  Sep.  30      60948      +0,092409    +0,22525    +0,34304 
  Oct.   1      60949      +0,093060    +0,22476    +0,34130 
         2      60950      +0,093472    +0,22411    +0,33970 
         3      60951      +0,093644    +0,22317    +0,33822 
         4      60952      +0,093572    +0,22201    +0,33691 
         5      60953      +0,093241    +0,22102    +0,33574 
         6      60954      +0,092720    +0,21987    +0,33456 

                          P R E D I C T I O N
  YEAR  2025
  Oct.  13      60961      +0,09286     +0,2102     +0,3259   
        20      60968      +0,09180     +0,2005     +0,3154   
        27      60975      +0,09206     +0,1908     +0,3073   
  Nov.   3      60982      +0,08965     +0,1791     +0,2990   
        10      60989      +0,08780     +0,1711     +0,2939   
        17      60996      +0,08544     +0,1607     +0,2925   
        24      61003      +0,08761     +0,1508     +0,2907   

     NOTATION:
MJD - Modifired Julian Day; MJD=JD-2400000,5;
UT1(SU), X(SU), Y(SU) - Universal Time UT1 and terrestrial pole motion
                        components, evaluated State Service for Time,
                        Frequency and EOP evaluation - SSTF;
UTC -  Universal Time Coordinated;
TA(SU) - Atomic Time scale of Russian Federation;
Difference UTC-TA(SU) = -33,17276 s (from 1 July 2015),
                        -34,17276 s (from 1 January 2017).


                                 Main Metrological Center
                                       of SSTF