atomic clock timekeeper: crossword clues

Matching Answer
Confidence
MASER
60%
DALI
60%
CUCKOOCLOCK
49%
EST
20%
PST
20%
SHOTCLOCK
20%
RADO
20%
METRONOMES
20%
METRONOME
20%
HOURMANINHAVANA
20%
e.g. Greek Cheese
e.g. O?D (Use ? for unknown letters)