Federal Agency
  on Technical Regulating
  and Metrology

  FSUE "VNIIFTRI"



                                 B U L L E T I N E    A - 2605

                                            8 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.  25      61004      +0,084305    +0,13713    +0,31366 
        26      61005      +0,084170    +0,13608    +0,31440 
        27      61006      +0,083735    +0,13509    +0,31494 
        28      61007      +0,083019    +0,13428    +0,31510 
        29      61008      +0,082068    +0,13345    +0,31530 
        30      61009      +0,080961    +0,13249    +0,31557 
  Dec.   1      61010      +0,079817    +0,13150    +0,31590 

                          P R E D I C T I O N
  YEAR  2025/26
  Dec.   8      61017      +0,07700     +0,1245     +0,3184   
        15      61024      +0,07313     +0,1158     +0,3215   
        22      61031      +0,07476     +0,1040     +0,3274   
        29      61038      +0,07224     +0,0952     +0,3330   
  Jan.   5      61045      +0,07247     +0,0824     +0,3401   
        12      61052      +0,07017     +0,0721     +0,3502   
        19      61059      +0,07450     +0,0606     +0,3631   

     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