I am not sure what logstash YYYY.MM.dd is based on.
I'm in asia/seoul area and I also sent a message at 1am. The 13th was 1:00 a.m. on the 14th, but there was no newly created 14-day index in elasticsearch.
I searched for other similar questions and saw that @timestamp is the standard.
Obviously, the timestamp was 14 days, but there was no new 14-day index.
If I am doing something wrong, can I make YYYY.MM.dd into the future if I change @timestamp into the future using logstash's date filter?