Federal Agency
  on Technical Regulating
  and Metrology

  FSUE "VNIIFTRI"



                                 B U L L E T I N E    A - 2604

                                            1 December 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
  Nov.  18      60997      +0,083876    +0,14923    +0,31651 
        19      60998      +0,083643    +0,14744    +0,31633 
        20      60999      +0,083548    +0,14567    +0,31600 
        21      61000      +0,083589    +0,14381    +0,31544 
        22      61001      +0,083759    +0,14182    +0,31488 
        23      61002      +0,083996    +0,13982    +0,31417 
        24      61003      +0,084212    +0,13811    +0,31367 

                          P R E D I C T I O N
  YEAR  2025/26
  Dec.   1      61010      +0,08049     +0,1291     +0,3145   
         8      61017      +0,07890     +0,1169     +0,3181   
        15      61024      +0,07573     +0,1074     +0,3215   
        22      61031      +0,07746     +0,0936     +0,3265   
        29      61038      +0,07531     +0,0820     +0,3346   
  Jan.   5      61045      +0,07734     +0,0689     +0,3457   
        12      61052      +0,07841     +0,0551     +0,3537   

     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