The metrics had problem with the points, if I post/save a metric point that is created in the future, it was selected. Example: It is 10:00 am, I post or save a metric point and it's 'created at' 10:30 am. Using the "Last 12 hours" the metric point would be selected. This update is applied on all the SQL queries, on minutes, hours, days. Related to CachetHQ/Cachet#2848