Federal Agency
  on Technical Regulating
  and Metrology

  FSUE "VNIIFTRI"



                                 B U L L E T I N E    A - 2610

                                           12 January 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  2025
  Dec.  30      61039      +0,074497    +0,11040    +0,32777 
        31      61040      +0,074195    +0,11086    +0,32962 
  Jan.   1      61041      +0,074068    +0,11063    +0,33120 
         2      61042      +0,074164    +0,10964    +0,33253 
         3      61043      +0,074364    +0,10833    +0,33354 
         4      61044      +0,074481    +0,10699    +0,33452 
         5      61045      +0,074362    +0,10559    +0,33546 

                          P R E D I C T I O N
  YEAR  2026
  Jan.  12      61052      +0,07082     +0,0968     +0,3414   
        19      61059      +0,07293     +0,1006     +0,3526   
        26      61066      +0,07054     +0,0978     +0,3613   
  Feb.   2      61073      +0,07169     +0,0976     +0,3688   
         9      61080      +0,06840     +0,0981     +0,3766   
        16      61087      +0,06869     +0,0990     +0,3865   
        23      61094      +0,06332     +0,0985     +0,3966   

     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