Hi, i think these tracking websites have some delay in readings maybe 1 day delay.gsat 10 has been reached to 83, if nt then it will reach on today evening.
while moving el angle is nt changing too much, so with that we can catch upto 2 degree difference sats on single dish with gud siganls,like SUN & INSAT-4b and NSS6 & Insat4b.