Federal Agency
  on Technical Regulating
  and Metrology

  FSUE "VNIIFTRI"



                                 B U L L E T I N E    A - 2590

                                           25 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
  Aug.  12      60899      +0,071990    +0,21820    +0,41403 
        13      60900      +0,072046    +0,21872    +0,41310 
        14      60901      +0,072134    +0,21909    +0,41214 
        15      60902      +0,072380    +0,21974    +0,41108 
        16      60903      +0,072855    +0,22056    +0,40998 
        17      60904      +0,073551    +0,22148    +0,40883 
        18      60905      +0,074536    +0,22227    +0,40752 

                          P R E D I C T I O N
  YEAR  2025
  Aug.  25      60912      +0,07921     +0,2278     +0,3980   
  Sep.   1      60919      +0,08315     +0,2281     +0,3895   
         8      60926      +0,08654     +0,2264     +0,3798   
        15      60933      +0,08463     +0,2290     +0,3720   
        22      60940      +0,08378     +0,2255     +0,3657   
        29      60947      +0,08463     +0,2251     +0,3591   
  Oct.   6      60954      +0,08532     +0,2208     +0,3523   

     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