Hi Abhi,
I'm not too sure if the email is dated 21st Dec, its just that consultant told me that i have got MR request today. I will have the email in my inbox on Monday from my consultant. Probably that will give us an idea if NDVO is really working on the weekends too! As far as my understanding goes, they might not work on the weekends. (After all, its NEW DELHI Visa Office, Indian Government
)
Could be some auto-generated mail timing of which can be fixed in advance. I may be wrong to assume this. Comments are welcome!