Federal Agency
  on Technical Regulating
  and Metrology

  FSUE "VNIIFTRI"



                                 B U L L E T I N E    A - 2586

                                           28 July 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  15      60871      +0,055739    +0,18433    +0,43581 
        16      60872      +0,055821    +0,18671    +0,43556 
        17      60873      +0,055890    +0,18891    +0,43541 
        18      60874      +0,056049    +0,19067    +0,43513 
        19      60875      +0,056361    +0,19196    +0,43464 
        20      60876      +0,056819    +0,19288    +0,43404 
        21      60877      +0,057494    +0,19387    +0,43354 

                          P R E D I C T I O N
  YEAR  2025
  July  28      60884      +0,06255     +0,2014     +0,4304   
  Aug.   4      60891      +0,06723     +0,2094     +0,4253   
        11      60898      +0,07479     +0,2157     +0,4199   
        18      60905      +0,07894     +0,2209     +0,4124   
        25      60912      +0,08424     +0,2239     +0,4030   
  Sep.   1      60919      +0,08763     +0,2274     +0,3944   
         8      60926      +0,09069     +0,2271     +0,3874   

     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