Federal Agency
  on Technical Regulating
  and Metrology

  FSUE "VNIIFTRI"



                                 B U L L E T I N E    A - 2599

                                           27 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
  Oct.  14      60962      +0,094011    +0,20716    +0,32578 
        15      60963      +0,094482    +0,20533    +0,32505 
        16      60964      +0,094733    +0,20341    +0,32433 
        17      60965      +0,094753    +0,20148    +0,32361 
        18      60966      +0,094580    +0,19964    +0,32285 
        19      60967      +0,094291    +0,19797    +0,32231 
        20      60968      +0,093972    +0,19649    +0,32197 

                          P R E D I C T I O N
  YEAR  2025
  Oct.  27      60975      +0,09528     +0,1851     +0,3219   
  Nov.   3      60982      +0,09592     +0,1706     +0,3195   
        10      60989      +0,09566     +0,1562     +0,3153   
        17      60996      +0,09362     +0,1432     +0,3083   
        24      61003      +0,09465     +0,1310     +0,3046   
  Dec.   1      61010      +0,09220     +0,1173     +0,3005   
         8      61017      +0,09182     +0,1079     +0,3001   

     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