Federal Agency
  on Technical Regulating
  and Metrology

  FSUE "VNIIFTRI"



                                 B U L L E T I N E    A - 2643

                                           31 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
  Aug.  18      61270      +0,007230    +0,22171    +0,35109 
        19      61271      +0,006888    +0,22071    +0,35028 
        20      61272      +0,006748    +0,21964    +0,34952 
        21      61273      +0,006768    +0,21856    +0,34873 
        22      61274      +0,006863    +0,21752    +0,34774 
        23      61275      +0,006984    +0,21643    +0,34669 
        24      61276      +0,007078    +0,21531    +0,34562 

                          P R E D I C T I O N
  YEAR  2026
  Aug.  31      61283      +0,00288     +0,2085     +0,3385   
  Sep.   7      61290      -0,00048     +0,2021     +0,3333   
        14      61297      -0,00642     +0,1981     +0,3303   
        21      61304      -0,00830     +0,1948     +0,3277   
        28      61311      -0,01426     +0,1887     +0,3268   
  Oct.   5      61318      -0,01853     +0,1835     +0,3250   
        12      61325      -0,02790     +0,1738     +0,3221   

     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