Today, the answer is no. Whether or not you are welcome to attend the Sunday evening program depends on when you visit the temple. During the winter (October to March) the temple closes at 5:00pm. There is a Sunday program in the winter at 5:30pm for temple members only.
Guests may be welcome to the Sunday evening program during the other parts of the year. Check the ISKCON Saranagati temple website for more details: saranagatitemple.com
Temple Winter Hours
Daily from 7:30 a.m. to 5:00 p.m.
Except Sundays from 12:00 p.m. to 5:00 p.m.
Why would an ISKCON temple close the Sunday evening program to guests?