Federal Agency
  on Technical Regulating
  and Metrology

  FSUE "VNIIFTRI"



                                 B U L L E T I N E    A - 2587

                                            4 August 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
  July  22      60878      +0,058324    +0,19484    +0,43325 
        23      60879      +0,059205    +0,19592    +0,43295 
        24      60880      +0,060018    +0,19713    +0,43268 
        25      60881      +0,060655    +0,19845    +0,43232 
        26      60882      +0,061058    +0,19960    +0,43167 
        27      60883      +0,061276    +0,20076    +0,43088 
        28      60884      +0,061360    +0,20200    +0,43025 

                          P R E D I C T I O N
  YEAR  2025
  Aug.   4      60891      +0,06425     +0,2132     +0,4251   
        11      60898      +0,06893     +0,2185     +0,4200   
        18      60905      +0,07194     +0,2266     +0,4137   
        25      60912      +0,07776     +0,2307     +0,4063   
  Sep.   1      60919      +0,08367     +0,2337     +0,3975   
         8      60926      +0,08894     +0,2341     +0,3861   
        15      60933      +0,09065     +0,2346     +0,3758   

     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