Federal Agency
  on Technical Regulating
  and Metrology

  FSUE "VNIIFTRI"



                                 B U L L E T I N E    A - 2591

                                            1 September 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.  19      60906      +0,075630    +0,22328    +0,40599 
        20      60907      +0,076755    +0,22452    +0,40446 
        21      60908      +0,077769    +0,22580    +0,40312 
        22      60909      +0,078616    +0,22686    +0,40177 
        23      60910      +0,079310    +0,22793    +0,40038 
        24      60911      +0,079864    +0,22901    +0,39893 
        25      60912      +0,080296    +0,23008    +0,39762 

                          P R E D I C T I O N
  YEAR  2025
  Sep.   1      60919      +0,08530     +0,2338     +0,3898   
         8      60926      +0,08916     +0,2367     +0,3803   
        15      60933      +0,08999     +0,2344     +0,3715   
        22      60940      +0,09095     +0,2301     +0,3618   
        29      60947      +0,08987     +0,2302     +0,3542   
  Oct.   6      60954      +0,08784     +0,2242     +0,3484   
        13      60961      +0,08567     +0,2215     +0,3424   

     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