How create a time slot that increase a time by 15 min in android

slot 15 before to 15 min after the selected time slot Visitors are advised to arrive 30 minutes before their selected timed entry slot Regarding the combined ticket,

For example- if booking slot is 06:00 to 09:00 hrs , then all passengers booked on ticket should reach the Helipad boarding point by 05:00 hours 11) Seating of slotjoker1234 For instance, a x16 slot with only 4 PCIe lanes is quite common 15, HSOn, Ground, 65, Ground, HSIn 16, Ground, HSIp, Lane 0 receive