Holi

The festival of colors is celebrated in

Within Braj bhoomi
http://harekrishnainfo.blogspot.com/search/label/Br

1. Mathura, 
2. Bharatpur, 
3. Agra, 
4. Hathras, 
5. Dholpur, 
6. Aligarh, 
7. Etawah, 
8. Mainpuri, 
9. Etah, 
10. Kasganj and 
11. Firozabad

Within Mathura,

1. Vrindavan, 
2. Nand Gaon, 
3. Barsana, 
4. Goverdhan, 
5. Dauji and Baldev

for 50 days

https://gopiradhakrishna.blogspot.com/search/label/shankachuda

http://freeglobaluniversity.blogspot.com/search/label/Holi