Federal Agency
  on Technical Regulating
  and Metrology

  FSUE "VNIIFTRI"



                                 B U L L E T I N E    A - 2639

                                            3 August 2026


            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  2026
  July  21      61242      +0,009235    +0,21612    +0,37140 
        22      61243      +0,009205    +0,21704    +0,37072 
        23      61244      +0,009377    +0,21790    +0,37016 
        24      61245      +0,009748    +0,21860    +0,36959 
        25      61246      +0,010276    +0,21916    +0,36916 
        26      61247      +0,010901    +0,21942    +0,36876 
        27      61248      +0,011570    +0,21940    +0,36820 

                          P R E D I C T I O N
  YEAR  2026
  Aug.   3      61255      +0,01212     +0,2195     +0,3635   
        10      61262      +0,01209     +0,2221     +0,3584   
        17      61269      +0,00847     +0,2199     +0,3515   
        24      61276      +0,00836     +0,2198     +0,3467   
        31      61283      +0,00684     +0,2143     +0,3409   
  Sep.   7      61290      +0,00763     +0,2108     +0,3345   
        14      61297      +0,00334     +0,2047     +0,3298   

     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