It may not be an actual Vedik celebration according to the Panjika,
BUT IF YOU FORGET IT - SUCH OFFENCES / APARADHAS THAT YOU ACCRUE LEAD TO SUFFERING -
AND THAT MEANS YOU'RE DEAD !!! (OR YOU'LL WISH TO BE)
....but you'll remember next year.
Did you REALLY forget.
Doesn't it make you feel like this:
Make up for it HERE