New Year crossword puzzle

N.B. There are no spaces between words.
Across	Down
1 new year in Scotland 3 enumeration of final moments 4 greet warmly 6 famous London clock 8 explosion of lights 10 day of new year 16 12 o'clock at night 17 promise you make 19 new year month 20 shows the date 21 traditional New Year song	2 there are 12 in the year 3 festivity to mark an event 5 couples do this at midnight 7 expression of goodwill 9 celebrate the arrival 11 where crowds gather in New York 12 noise produced by clock 13 get-together to celebrate 14 used for decoration at parties 15 celebration drink 18 move to music