startDate.setHours(0, 0, 0, 0)
} else if (groupInterval.endsWith(' hour') || groupInterval.endsWith(' hours')) {
startDate.setMinutes(0, 0, 0)
startDate.setHours(0, 0, 0, 0)
} else if (groupInterval.endsWith(' hour') || groupInterval.endsWith(' hours')) {
startDate.setMinutes(0, 0, 0)