Bangalore Briyanis becoming very stale in evening

It's just me or the Bangalore Briyanis have started tasting worse in the evenings. They taste so stale and even bitter at times. Don't they break a new dum in the evening? It's so disappointing to the point that I have stopped ordering briyani at night and have sticked to ordering them in noon only. Your thoughts? Any briyani that you tried at night and it was fresh?