Federal Agency
  on Technical Regulating
  and Metrology

  FSUE "VNIIFTRI"



                                 B U L L E T I N E    A - 2578

                                            2 June 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
  May   20      60815      +0,030583    +0,10420    +0,43216 
        21      60816      +0,030389    +0,10541    +0,43285 
        22      60817      +0,029939    +0,10645    +0,43375 
        23      60818      +0,029269    +0,10743    +0,43459 
        24      60819      +0,028533    +0,10816    +0,43553 
        25      60820      +0,027902    +0,10869    +0,43627 
        26      60821      +0,027542    +0,10968    +0,43670 

                          P R E D I C T I O N
  YEAR  2025
  June   2      60828      +0,02886     +0,1161     +0,4397   
         9      60835      +0,02980     +0,1236     +0,4419   
        16      60842      +0,03502     +0,1334     +0,4432   
        23      60849      +0,03616     +0,1417     +0,4433   
        30      60856      +0,04189     +0,1511     +0,4432   
  July   7      60863      +0,04652     +0,1637     +0,4428   
        14      60870      +0,05403     +0,1724     +0,4403   

     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